This Powermaster Unit Will Give You Full Braking Power As Long . - Gmcmi
THIS POWERMASTER UNIT WILL GIVE YOU FULL BRAKING POWER AS LONG AS YOU HAVE A LIVE BATTERY, THE IGNITION IS ON AND IN THE RUNNING POSITION BUT THE ENGIN E NEED NOT BE RUNNING . THIS BRAKING SYSTEM GIVES YOU A MUCH LIGHTER BRAKE PEDA L AND IS VERY EASY TO LOCK ALL SIX WHEELS IF NECESSARY WITH EXISTING VACUUM BOOSTE R IN GOOD CONDITION APPROXIMATELY 1000 PSI WITH G .M . POWERMASTER OVER 1600 PSI ABOUT 65 % MORE BRAKING POWER . I WOULD LIKE TO SUGGEST ALL NEW HYDRAULIC HOSES ON ALL WHEELS . THEY SHOULD BE CHANGED ANYWAY . IF YOU BUY AN OLD UNIT THAT HAS A BLACK PRESSUR E SWITCH (3 Pin Connector) THE NEW TYPE WILL BE THE SAME BUT GRAY . THAT WAS TH E RECALL . IT IS EASY TO INSTALL BY REMOVING THE MASTER CYLINDER AND BOOSTER . YOU WILL NEED AN ADAPTER BETWEEN THE POWERMASTER AND THE FIRE WALL, AND THE WIRING IS SEL F EXPLANATORY . THE ADAPTER OR SPACER IS MADE OF 319 S .R . ALUMINUM, TENSILE STRENGT H 27,000 LBS . PER SQUARE INCH, YIELD 16,000 LB . PER SQUARE INCH, ELONGATING 2 % OVER 2 INCHES . I'M SURE THIS GENERAL MOTORS UNIT IS A MUST FOR A SAFE STOP ON THI S SIX TON MOTOR HOME . I AM MAKING THIS ADAPTER AND SELLING AT MY COST . IF SOMEONE OR SOME COMPANY WOUL D LIKE TO MAKE THIS PART, PLEASE TALK TO ME ABOUT THE PATTERNS, MACHINING, ETC . THE PART NO . FOR THE GMC POWERMASTER AND PARTS ARE AS FOLLOW S GMC POWERMASTER ACCUMULATOR 18018236 List Price 620 .00 18014978 List Price 50 .00 Net Price 37 .5 0 PRESSURE SWITCH 18018141 List Price 12 .00 Net Price 8 .00 (Gray Only) Net Price 460 .0 0 YOU MAY FIND THIS UNIT IN AN EXPERIENCED AUTO EMPORIUM (JUNK YARD) ON A 86 CHEV . CAPRICE STATION WAGON, SOME DELTA 88 OLDS ., BUICK LA-SABER ALL STATION WAGONS ALL TH E SAME YEAR . IF YOU CAN LOCATE THIS UNIT IN A JUNK YARD THEY WILL RUN SOMEWHERE IN TH E NEIGHBORHOOD OF 100 to 200 .00 COMPLETE . BE SURE AND TRY TO GET THE HARNES S THAT GOES WITH THIS UNIT . MARVIN PECK - GMC CLASSI C 5713 , Armour, Dr . Houston, Texas 7702 0 (713) 675-0142
5D4.2 POWERMASTER GENERAL DESCRIPTIO N This Powermaster unit is a complete, integral powe r brake apply system . It consists of an electro-hydraulic (E H) pump, fluid accumulator, pressure switch, fluid reservoir, and a hydraulic booster with an integral dual maste r cylinder . The nitrogen charged accumulator stores fluid a t 510-675 psig for hydraulic booster operation . The E- H pump operates between pressure switch limits with the ignition "ON" . When the pressure switch senses accumulato r pressure below 510 psig, the 12-volt E-H pump operates t o increase accumulator fluid pressure to 675 psig . When th e brake pedal is depressed, fluid from the accumulator act s on the booster power piston to apply the master cylinde r which functions in the same manner as a conventional dua l master cylinder . 1. 2. 3. New 0-ring (2) on pressure switch (1) . Pressure switch (I) to 20-27 N-m (15-20 lb-ft) . Electrical connector (40) to pressure switch (I) . NOTICE : Replace all components included in repai r kits used to service this power brake . Lubricate rubbe r parts with clean, fresh brake fluid to ease assembly . Do not use lubricated shop air on brake parts as damag e to rubber components may result . If any hydrauli c component is removed or brake line disconnected, i t may be necessary to bleed part or all of the brake system . The torque values specified are for dry, unlubricated fasteners . Perform service operations on a clea n bench free from all mineral oil materials . CAUTION : The use of rubber hoses other tha n those furnished specifically for the Powermaste r may lead to functional problems requiring majo r overhaul . ACCUMULATO R Figure 3 9 Depressurize Powermaster unit . Se cCAUTION page 5D4-2 . ON-CAR SERVIC E CAUTION : Failure to fully depressuriz e cotPerpunwibafmslgervic d result in injury to service personnel and damag e to painted surfaces . EH Remove or Disconnec t 1. 2. Accumulator (3) . O-ring (4) from accumulator . 0 DEPRESSURIZING POWERMASTER UNI T Importan t Depressurize Powermaster before performing an y service . With ignition off, apply and release brake pedal a minimum of 10 times using approximately 50 pound s force on the pedal . Importan t Importan t See NOTICE on page 5-1 . Install or Connec t 1. 2. New 0-ring (4) on accumulator . Accumulator to 20-27 N-m (15-20 lb-ft) . PRESSURE SWITC H Figure 2 Importan t Depressurize Powermaster unit . See CAUTION o n page 5D4-2 . t . Remove or Disconnec t 1, 2, Electrical connector Pressure switch (1) . 0-ring (2) . 9 Importan t (40) from pressure switch (1) . See NOTICE on page 5-1 . Figure 3 Accumulato r
IOCK ACCY TK ( ,P%I S START 1 B * 33 1 AND 33 BELOW 400 PSI SWITCHA CLOSED A T B4 C10 0 TAN/WHT SWITC H S 7ANMHT .5 TANMH T ' I 3 3 IGNITIO N INDICATOR soot 33 BRAKE' WARNING W. Q ONLY 'T /t t1 L F TAN/WHT BULB 1 TEST I C2 G2 OFF 33 5 TAN/WHT STATION WAGON CLOSED WITH UNEQUA L BRAK E PRESSURE SWITC H BRAK E PRESSUR E .5 TAN/WHT 3 33 INSTRUMEN T PANE L I PRINTE D CIRCUI T l ' . WITHOUT GAGES: WITH GAGES) I .5 PNK/B 1 POWER MASTER BRAKE SYSTEM .8 BRAKE O N Iso 1 R A ra .8 WH T CLOSED WIT H J PARKIN G SWITC H 1I PNK/BLK 1 PNK/BLK I i — l SEE FUS5. BLOCK DETAILS AtL 925 SWITCHB CLOSED A T 510 PSI AN D BELOW OPEN AT 675 PS I AND ABOV E G.11, .S BLK SHAK E ACCUMULATO R PRESSURE, SWITCH GS Ji{ 3 URN 0100 40 C 3 ORN J40 BRAKE RESERVOI R PUMP MOTO R BIN ; ANTI . DIESELING 15a .6 2 C100 POWER MASTE R DRAKE RELA Y :,.w-4J- a " - POWER MASTE R BRAKE IN-LINE FUSE (30 AMP) I l (LT GRN) A B 3 RED F4 BATTER Y JUNCTION BLOC K ice: 'c ,:: ;: :.".*::4 : , . 7sp ;. tp",jr!y E. ; :: :. ii.!5it} eti.ra : .:c. :', :.-K , 3 BLKIGRN 1 2 , . :. . :.:t . ;Y . "-'L: ., ------------------------------------ - 39 szeT 39 ;ty FUSE BLOC K —' x .{ :.:H GAGE (USE 20 AMP SEE FUSE I -- BLOCK DETAILS . . : :', ;,.: ., . .r(.t' PARK BRAK E 39 .e .: M.r
If the indicator goes out, the BRAK E PRESSURE SWITCH was closed . 3. If the "BRAKE" WARNING INDICATOR remains on with the IGNITIO N SWITCH in "Run" and the Park Brake off , a leak in one of the brake systems is indicated . Verify that that this is true b y removing the connector from the BRAK E PRESSURE SWITCH . 1. Check the GAGES FUSE by turning th e IGNITION SWITCH to "Run" and chec k to see if the FUEL GAGE is working . 2. Check the POWER MASTER BRAKE IN LINE FUSE with an ohmmeter . TR OUBLESHOOTING HINT S The "BRAKE" WARNING INDICA TOR comes on, the BRAKE RESER VOIR PUMP MOTOR operates, an d then the indicator goes out . 3. Release the Park Brake and turn the IGNITION SWITCH "Off." Step on the brak e pedal several times until more peda l resistance is felt . Put the IGNITIO N SWITCH in "Run . " The "BRAKE" WARNING INDICATO R comes on . 2. With the IGNITION SWITCH IN "Run, " put the Park Brake on . If the indicator remains on, check for a shorted PARK BRAKE - SWITCH , IGNITION SWITCH, or wire . If battery voltage is present at th e TAN/WIIT wire, install a new PAR K 13RAKE SW ITCH . If zero volts is present at the TAN / \VIIT wire, check the wire for an open between the switch and C100 . TOR comes on in "Bulb Test" but not whe n the Park Brake is on, measure the voltag e at the TAN/W1-IT wire at the PAR K BRAKE SWITCH . Put the IGNITIO N SWITCH in "Run" and apply the Par k Brake . . 4 . If the "BRAKE" WARNING INDICA- There is low brake pressure in one sys tem . 201- 5- E 201 . 4- E 201-12- A 201- 4- E 201- S- C 201- 6-A 201- 6- A 201 . 4- E 201 . 4- E 201- 5- B 201- 4- A 201- 6- A 201- 6-A Page-Figur e 6. If the "BRAKE" WARNING INDICA 'T'OR does not come on with low brak e accumulator pressure, check for batter y voltage at terminal B of the BRAKE ACCUMULATOR PRESSURE SWITCH . Install a new switch if voltage is presen t and ground is good at terminal C . If battery voltage is present at G2 , install a new IGNITION SWITCH . 5. If the "BRAKE" WARNING INDICATOR comes on with the Park Brake on, bu t not in "Bulb Test," check for voltage at th e IGNITION SWITCH terminal G2 . Put th e IGNITION SWITCH in "Bulb Test . " RIf inner fender panel, behind battery Battery Junction Block Brake Accumulator Pressure Switch LII front of dash Below engine dash, on frame Brake Pressure Switch I,H front of dash Brake Reservoir Pump Motor Under LH side of I/P Fuse Block Behind I/P, on upper portion of park brake Park Brake Switch In connector by fuse block Power Master Brake In-Line Fuse LH front of dash Power Master Brake Relay Bulkhead connector, LH side of engine dash C100 (46 cavities) Front of engine, right of A/C compressor G112 Engine harness, rear of engine S120 I/P harness, below light switch S287 I/P harness, under LH side of I/P SSO1 1. Turn the IGNITION SWITCH slowly pas t the " Run " position . The "BRAKE" WARNING INDICATOR comes on before the IGNITIO N SWITCH reaches the "Start" position . COMPONENT LOCATION SYSTEM CHEC K /'G'I'VER MASTER BRAKE SYSTE M
' Battery Batter y Voltag e 2 . With the connector still removed from th e POWER MASTER BRAKE RELAY, mea sure the resistance to ground at the follow ing terminals . First depress the brake peda l many times to lower the brake reservoi r pressure . If the voltages are correct, chec k resistances in the next step . If the voltage at a terminal is not correct, check the circuit feeding that ter minal . C (ORN) Termina l (Wire Color) B (PNK ;BLK) POWER MASTER BRAKE RELAY CONNECTO R Ignition Switch in "Run " VOLTAG E 1 . Remove the connector from the POWE R MASTER BRAKE RELAY . Measure th e voltage to ground at the following termi nals of the connector with the IGNITIO N SWITCH in "Run . " SYSTEM DIAGNOSI S POWER Mt- . 1ER BRAKE SYSTEM 0 0 Resistanc e The "BRAKE" WARNING INDICATO R comes on to warn the driver of brake hydrauli c pressure loss, or that the parking brake i s applied . In cars equipped with the Power Mas ter Brake System, the indicator comes on t o warn of low brake accumulator hydraulic pres sure . With the IGNITION SWI'I'CII in "Run, " "Bulb Test , " or "Start, " voltage is applie d through the GAGES FUSE and th e "BRAKE" WARNING INDICATOR to th e 13RAKE PRESSURESWITCII, IGNITIO N SWI'I'CII, PARK BRAKE SWITCH, and th e BRAKE ACCUMULATOR PRESSUR E : . . SWI'l'CI I (Switch A) . When a ground path i s CIRCUIT OPERATIO N If all the voltages and resistances at th e POWER MASTER 13RAKE RELA Y connector are correct and the brak e pump does not operate, install a ne w relay and motor assembly . y:' 1 :tom ;L \ . SURE . SWITCfI will close to light th e "BItAKE ;WARNING,INDICATOR'"' When the IGNITION SWITCH is in "Run, " "Bulb Test," or "Start," Switch B in th e BRAKE ACCUMULATOR PRESSUR E SWITCH senses an accumlator pressure o f 490-530 psi or less, the switch will close . Thi s provides ground to the POWER MASTE R BRAKE RELAY coil and the relay will energize to operate the BRAKE RESERVOI R PUMP MOTOR . The pump will run until th e accumulator is charged to a pressure abov e 635-735 psi . When the switch senses a pressur e of 635-735 psi, it will open to de-energize th e relay, which shuts off the pump . The pump will remain off until the accumulator pressur e drops to 490-530 psi and then the cycle start s again . If the pressure drops to 400 psi Switc h A in the BRAKE ACCUMULATOR PRES- N Jr?, When the BRAKE ACCUMULATO R PRESSURE SWITCH (Switch A) senses a n accumulator hydraulic pressure of 400 psi an d below, it will close . The IGNITION SWITCH does not have a detent for the "Bulb Test" position, but wil l close between "Run" and "Start" to test th e indicator . The PARK BRAKE SWITCH wil l be closed any time the Park Brake is set . 'I'Ite BRAKE PRESSURE SWITCH close s when there is an unequal pressure in the tw o sections of the hydraulic brake system . Th e switch will remain closed until the problem i s fixed . provided through any of these four switches, a circuit is completed through the indicator an d the closed switch to ground . The indicato r lights . Yt r 1.1 ,K;. M If terminals A and I) are not grounded , check the wiring at those terminals fo r opens . Also check the I3LK wire t o ground at the 13RAKE ACCUMULATOR PRESSURE SWITCH . If th e switch is open . replace it . Termina l (Wire Color) I) (1V I I'I') A (I3LK) - POWER MASTER BRAKE RELAY CONNECTO R RESISTANC E co
TO - GUAGES - FUS E 30 AMP - EjISR- TO PINK - W/BLAC K TRACER - BRAKE - PRESSURE SWITC H TAN WIRE IN INST . PANE L SAME - GOES TO BRAK E DIFFERANTIAL VALVE B Y COMBINATION VALV E GROUN D r
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Dallas C. Jensen P.O.Box 6 8 Coleridge. NE. 6872 7 Phone 402-283-426 1 10/14/9 0 Dear Ralph , After I came home from the convention in Michigan I took some action s and discovered some problems . First, I purchased the Alcoa wheels an d new tires. The problem I discovered here was that the wheel bolt s were too short for these thicker wheels, they only came a little mor e than half way through the nut . I was told that this was OK but it didn't look safe to me so I went looking for a longer bolt that would fit the hubs on the GMC coach . I found the right bolt at the NAPA parts store, bolt # 641-1359 is 1/2 inch longer than the original bol t and is the correct size for the ALCOA wheel. I also purchased the powermaster electric-hydraulic brake system fro m a junk-yard and received it with one of the electric connector s missing, I checked with the local GMC dealer and found that thes e connectors are available so I'll list them and the prices . The thre e pin connector is #12015793 for 1 .22 without pins, the four pi n connector is #12015797 for 1 .30 without pins . The pins come in two sizes, the large size for #12 wire used for pins A & C in the four pi n connector is #12051371 for .97, the small size for all othe r connections is #12014836 for .97 . The connectors and pins come wit h seals that make them water tight connections . Any good GM shop should have the crimping tools to assemble these connectors, if the crimpe r is not available the wires should be soldered into the pin . I feel this information should be made available to the readers of th e news letter . You might also add, for any one that gets one without the four pin connector that the wire to A & C must be 12 gage wire as these are the leads to the motor and the wiring diagrams do not tel l us the size of the wire . I am looking forward to the next convention. Sincerely , Dallas C . nsen .
Dallas C . Jensen P .O.Box 6 8 Coleridae, NE . 6872 7 Phone 402-283-426 1 05/03/9 1 Lear Ralph, After Installina the Powermaster brake system on my coach I would lik e to point out another problem that your readers should be aware of . I found the clevis pin that connects the control arm to the maste r cylinder on my coach was 7/16th inch diameter and the hole in th e Powermaster brake system was 1/2 inch in diameter . to correct th e p roblem, the control arm should be drilled out to 1/2 inch and a 1/2 inch pin should be used . or a bushing should be made for the 1/2 inc h hole on the Powermaster brake system so that the 7/16 pin can be used. I chose to make the bushing . I would also p oint out that I had to adiust the switch for the brake liaht and the vacuum valve next to it that dise ngages the cruis e control . I chose to connect the wire from pin "B" on the three pin plua to the wire going to the parkins brake l ight switch rather than the wire goin g to the differential valve as Marvin suggested in hi s wirina dig ram. I believe the parking brake li g ht will get m y attention better in the event of a system failure, than the brak e liaht that is located at the bottom of the s peedometer . After road-testing the system I am very happy with it and feel it is a good investment . I was unable to get to Las Vegas but am planning to make it to Gettysburg in september . See you then. Sincerely , allas C. Jensen .
gmc powermaster 18018236 list price 620.00 net price 460.00 accumulator 18014978 list price 50.00 net price 37.50 pressure switch 18018141 list price 12.00 net price 8.00 (gray only) you may find this unit in an experienced auto emporium (junk yard) on a 86 chev . caprice station wagon, some delta 88 olds., buick la-saber all station wagons .
1. INLEIDING D-304331 PowerMaster-30 G2 Installatiehandleiding 3 1. INLEIDING De PowerMaster -30 G2 is een professioneel, alles-in-een draadloos beveiligingssysteem voor inbraakbeveiliging, branddetectie en veiligheidssituaties, gebaseerd op Visonic’s revolutionaire PowerG tweeweg, Time Division Multiple
Trigonometry Unit 4 Unit 4 WB Unit 4 Unit 4 5 Free Particle Interactions: Weight and Friction Unit 5 Unit 5 ZA-Chapter 3 pp. 39-57 pp. 103-106 WB Unit 5 Unit 5 6 Constant Force Particle: Acceleration Unit 6 Unit 6 and ZA-Chapter 3 pp. 57-72 WB Unit 6 Parts C&B 6 Constant Force Particle: Acceleration Unit 6 Unit 6 and WB Unit 6 Unit 6
In the 26 years since 有iley publìshed Organic 1于ze Disconnection Approach 色y Stuart Warren，由自approach to the learning of synthesis has become while the book Ìtself is now dated in content and appearance' In 唱Tiley published Organic and Control by Paul Wyatt and Stuart 轧Tarren. Thís muc如柱。okís as a
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CAPE Management of Business Specimen Papers: Unit 1 Paper 01 60 Unit 1 Paper 02 68 Unit 1 Paper 03/2 74 Unit 2 Paper 01 78 Unit 2 Paper 02 86 Unit 2 Paper 03/2 90 CAPE Management of Business Mark Schemes: Unit 1 Paper 01 93 Unit 1 Paper 02 95 Unit 1 Paper 03/2 110 Unit 2 Paper 01 117 Unit 2 Paper 02 119 Unit 2 Paper 03/2 134
BASIC WIRING TABLE OF CONTENTS Unit I: Occupational Introduction 1 Unit II: General Safety 15 Unit III: Electrical Safety 71 Unit IV: Hand Tools 101 Unit V: Specialty Tools and Equipment 195 Unit VI: Using Trade Information 307 Unit VII: Basic Equipment 343 Unit VIII: Basic Theory 415 Unit IX: DC Circuits 469 Unit X: AC Circuits 533 Unit XI: Wiring Methods 641 Unit XII: Conductors 685
CONTENTS Page Thank you page 3 About the book 4 UNIT 1: About Academic IELTS Task 1 6 UNIT 2: Line Graphs – Language of Change 8 UNIT 3: Introducing a graph 20 UNIT 4: Grouping Information 26 UNIT 5: A More Complicated Line Graph 29 UNI T 6: Describing Bar Charts 36 UNIT 7: Describing Pie Charts 44 UNIT 8: Describing Tables 49
Annex L : API Standard 650 Storage Tank Data Sheet Annex M : Requirements for Tanks Operating at Elevated Temperatures Annex P : Allowable External Loads on Tank Shell Openings Annex S : Austenitic Stainless Steel Storage Tanks Annex V : Design of Storage Tanks for External Pressure Hossein Sadeghi WELDED TANKS FOR OIL STORAGE (Rev. 0) 12 STANDARD INTRODUCTION. Hossein Sadeghi WELDED TANKS FOR .
