INJECTION PUMP MDDEL DB28251PC36~3
SUPERSEDES MODEL
SPECIFICATION
DATtD l-30-81
( TEST MTA FOR CUSTOMER PART NO. 2215011177
SERVICE USE ONLY) CUSTOMER’S NAME L ADDRESS:
ENGIIVE 350 V-8 FULL LOAD RPM 4000 OLUSMOBILE DIVISION
APPLICATION AUTOMOTIVE GENERAL MOTORS CORP.,
VEHICLE 1979 GOV REGUlATlON IO LANSING. MICHIGAN
--. _-_-_ -_____ z ISSUED BY: J. HcMahor,
NOTE: ALL SPEEDS ARE IN ENGINE RPM UNLESS OTHERWISE NOTED I
126. LOCK THROTTLE LEVER IN POSITION AND INSTALL
(*5 RPM) THROTTLE LEVER PROTRACTOR 822089 ONTO SHAFT.
TEST STAND
e. ALIGN O” ON PROTRACTOR WITH SCRIBE MARK ON TIMING
WINDOW BOSS. UNLOCK THROTTLE LEVER AND ROTATE
1. INJECTION LINES . . . . . . . . . . 093” I.D. BY 25” LONG
5tT” TOWARD W.O.T. POSITION. ADJUST MAX. TRAVEL
2. NOZZLES: 0.5 mm ORIFICE PLATE (REF. S.B. 334)
SCREW TO THIS 5S0 SETTING.
3. NOZZLE OPENING PRESSURE .._......... 1700 2 25 PSI
1. CHECK TOTAL THROTTLE TRAVEL: WITH THROTTLE IN LOW
4. CALIBRATING OIL-SAE J967 (Latest Revision)
IDLE POSITION, ALIGN O0 ON PROTRACTOR WITH SCRIBE
TEMPERATURE 110-115°F (at Inlet)
MARK ON TIMING WINDOW BOSS. MOVE THROTTLE TO
5. LOW PRESSURE PLUMBING SYSTEM. PER S.B. 334
W.O.T. READING SHOULD BE BETWEEN 70° AND @4O.
6 CAM MOVEMENT READ-OUT DEVICE 21734
13. CHECK POINTS
ALL FUEL READINGS ARE AT 500 STROKES
PUMP OPERPTlNG SPEED
a. AT 1500 RPM (WOT) DE.ENERGIZE ELECTRIC SHUT-OFF -
HALF ENGINE SPEED FUEL SHOULD BE 4 mm3iSTROKE. MAXIMUM. RE-ENERGIZE
PUMP ACCESSORIES
E.S.O.
1. Electric Shutoff (12v ETR) (TEST WITH 8.8 VOLTS MAX.) THRTL. MM3i MAXIMUM CANI PRESSURE (206)
2. Speed Advance 5. Min-max Governor II RPM POS. STROKE CYL. VAR. MOVEMENT T.PUMP HSG
3. Delivery Valve b.1500 LO IDL 2 MAX .- .- .-
4. Temperature Compensating Leaf c.15w WOT _. . 2.OQ4.00 _. 812
PUMP SETTINGS 6.1500 ADJUST lo-11 -. 3.5’8.00 8.12
1. ROLLER-TO-ROLLER DIMENSION...l.977 + .0002” e.3600 WOT(29a) - _. 5.0°-7.75’ &12
M
‘ aximum Eccentricitv: .OOB” TIR f.4ooo WOT 40.523 4 99110 0-12
2. LINKAGE GAP .135” to ,159” g.MM) WOT 13 MAX 5 *o-g” 125 MAX 8-12
3a. USE GAUGE 21914 TO SET THROTTLE AT 41° CCW. AS h. CHECK FOR MAXIMUM TRIMMER SCREW EXTENSION OF
MEAlSURED BETWEEN THROTTLE BALL STUD AND THROTTLE ,555” MEASURED FROM FACE OF ADVANCE HOUSING BOSS TO
SHAFT VERTICAL CENTERLINE. END OF TRIMMER SCREW.
b. ADJUST LOW IDLE SCREW UNTIL CONfACT IS MADE WITH ANY CHANGES AFTER THIS POINT WILL REQUIRE RETESTING
IDLE STOP BOSS. THIS WILL INSURE 41° WHEN GAUGE IS OF PUMP STARTING WITH STEP 11.
REMOVED FROM PUMP. 14. CHECK LOW IDLE @ 575 RPM FOR lOz2” MM31STROKE
4. OPERATE PUMP AT 1000 RPM (WOT) FOR 10 MINUTES TO WITH 3 MM3 MAX. CYL VARIATION AND 4-12 psi HOUSING
BRING TO OPERATING TEMPERATURE AND CLEAR AIR FROM PRESSURE
SYSTEM. . .
USE L.I. SCREW TO ADJUST, IF NECESSARY. CHECK &OF
5. CHECK E.S.O. FOR PULL-IN WI’TH 8.90 VOLTS MAX. BALL STUD TO VERTICAL .&OF SHAFT AT 39*-43’ (USE GAGE
THRDTTLE LEVER IN LOW IDLE POSITION AT 400 RPM, 21914)
6. SET T. PUMP PRESSURE @ 2000 RPM (WOT) FOR 56.64 psi 15. AIR-TIME PUMP USING GAGE 21916 (PER 58334) SET TO
(TEST STAND BOOST PRESSURE SET AT 5 + 0.5 psi) .5.50 to -6.50
7. CHECK FOR MINIMUM LIFT OF 18” HG. AT 400 RPM. 16. NAME PLATE..LEFT..Vlewing Trans. Pump End
8. SET RETURN OIL TO 250.350 cclmin. @ 2000 RPM (WOT) 17. TIMED .._..._LEFT..Viewing Trans. Pump End
9. CHECK HOUSING PRESSURE AT 2000 (WOT) FOR 6-12 psi. 18. TIMED TO CAM..(FOR REL. END OF INJECTION)
10. WITH GOVERNOR COVER REMOVED AND THROTTLE SHAFT 19. TIMED TO THIS CYLINDER (FROM T. PUMP END) @
IN LOW IDLE POSITION (STEP 3b), SET MIN MAX GOVERNOR 20. SPECIAL NOTES:
ASSEMBLY FOR 10 t 2 mm3lsfroke at 575 RPM (FUEL a. Torque all fasteners per XL764 or SE106 Q
READING WITH COVER INSTALLED). b. Pump to be tested with Fittings 22109 & 21606 installed
11. SET ADVANCE FOR 3.5’.5.0° AT 2000 RPM (WOT c. Seal Maximum Travel Adjusting Screw and Advance Trimmer
12a. FUEL DELIVERY 43.5 f 2.5 mm3lstroke @ 2000 RPM (WOT) Screw with Retaimng Compound #21915.
MAXIMUM CYLINDER VARIATION 3 mm3/stroke d. Open Petcock for pressure check ONLY
b. CHECK CRANKING DELtVERY @ 200 RPM (WOT) 21 mm3ls.t. a. If necessary to obtain advance requirements, use alternate
MIN. 12 psi min. T.P. PRESS. AND O-10 psi HSG. PRESSURE Inner Advance Spring No. 21911
c. SET THROTTLE FOR 21 * 2 MM31STROKE @ 1250 RPM. Note: PUMP MOUNTING. HORIZONTAL PUMP ROTATION
COUNTER.CLOCKWISE
21. SEAL PUMP FASTENERS PER X L671 )R SB365
--- - = _-. .-_-
DrsCR‘PI‘ON
ii- .‘“I “0 NOttSINGIRIVE GROUP
ul,
E Dsc”ICI,Q
ie
SCREW. cover hold-down 3 !2351
LOCKWASHER. cover screw 3 1582
13521 3 JASHER. cover screw
-----.
21606 1 LLBOW. return line connector
22109
CUhli. ASSY., return line
GASKET, governor cover 1 12054 1 SEAL, return line connector
1 COVER, governor control
1 SCREW ASSY., vent or 21661
SHAFT, drive 1 21204 thru 21665 and 22733 or
22734. as renuired
SEAL, drive shdft (BLACK) 2 11331 2 SCREY. head locking
21860 12259 SCREY. hsg.. pressure tap
SEAL, drive shaft (RED) 1
10464 ; SEAL, press. tap plug screw
:EAL. plilot tube 1 13622
p:K, shitft retaining 1 21260
IUbbl
1 HOUSINGASliEHgLYor 22158
,‘GVER. timing
” line
(See Service Assemblies)
six&, timing line cover : 19916
PLATE, name 1
1 GASKET, tinning line cover
5- l APPLY A LIBERAL COATING OF SYN-KUT BASE
1241 COMPOUND TO SEALS BEFORE ASSEMBLING
SCREU, name Plate 2
SEALS TO SHAFT AND SHAFT TO PUMP.
=
HEAD & ROTORGROUP I Page 2 of 3
MODELNO. DB2825PC3633
21727 iYD. HEAD & ROTORASSEMBLY
jc*""
11036 :
2 21196 ISE"YI:B'bhr:!~'il6~8'iStdndarc
ROLLER, cam or ,,,4, )R 11042 thru 11045 Oversize
2 20116 is indicated on rotor (SB60B)
SHOE, cam roller
1 21116 12216 1 SCREW, hyd. head plug
CAM RING
OR 22075 '(OVERSIZE) FUR 11438 SCREW, hyd. head plug
O.E.M. DNl_Y-INCREASE : CONNECTOR,fuel line
SPECIFIED R-R BY .OD6" SCREW, locking plate
SEAL, hydrauilic head 11304 ; PLATE, locking
SPKING, ledf 1 11196 1 SEAL, locking plate
SCREW, leaf spring 1 11175 1 SCREW,delivery valve
STOP, delivery valve
16441 1' SPRING, delivery valve
------I 3‘ 821
1 VALVE, delivery (SB143R)
DR 13822 (Oversize) as req'd.
z z
E V.ANSFER
iwm CROUP PAIT N‘
-@tP
SEAL, transfer pump 1 20530 2 RETAINER, rotor
- 21232 1 .INER, transfer pump
-15699 2 ;PHING, trans. pump blade
20528 1 ?ING, liner locating
21200 1 ILGULATORASSY., trans. pump
BLADE, transfer pump (Basi 4 l813i
Use 20511 o'r 20512 as ret I
I9837
iI
1 lOLLPIN
SPRING, regulating 1 2119,
PISTON, regulating 1 1989! 1 'LUG ASSY., end plate adj
SEAL, inlet filter screen
1 )CREEN. inlet filter
1 1903;
RING, screen retz;iner 2052'
PLATE, trans. pump pressut- ; ?052. 1 :AP, trdnsfer pump end
=------ _I_
=
SPRING, idling 1 !126e 1228L 2 NUT, pivot shaft
GOV. ARM AND TEMPERATURE 1127: 2192L 1 SPRING, min.-max.
COMPENSATOR ASSLMBLY 2126: 1 RING, retaining
SHAFT, governor arm pivot 1 12211 2176: 1 BLOCKASSEMBLY 7‘ .
SEAL, pivot shaft 2 11581 21261 1 STUD, guide
135% 1 WASHER, guide stud
PIN !176( 2189! ARM ASSY., metering valve
SLEEVE ; !175; ;
2191; SPRING, metering valve arm
ROD, min.-max. gov. push !175E
VALVE, metering or 22256
SLEEVE, thrust ; 2131; 22%:' 1’ RETAINER ASSY., gov. weiqht
or 14483 2294( RETAINER ASSY., gov. weight
WASHER,thrust sleeve ,162F 18981 i
WEIGHT, governor ; RETAINER, governor weight
!120' i898t 1
RING, gov. cage retaining 1 l228E HUB ASS?., governor weight
1 RING. flexible retainina
li PPI --
SPRING, idling 2 IUT, pivot shaft
GOV. ARM AN,DTEMPERATURE 1 IASHER. max. speed spring
COMPENSATOR ASSEMBLY i #PRING. min.-max.
'LOCKASSEMBLY
SHAFT. governor aim pivot I 2214
>
! #TUO. guide
SEAL. pivot shaft 1500 IASHER. guide stud
2849 ;
**SEE SERVICE ASSEMBLIES ,RH ASSY.. metering valve
SLEEVE. min..max governor I 2% 'PRING. metering valve arm
ROD. mh-JMJI. gov. push I 2326 1’ ALVE. metering or 22256
SLEEVE, thrust or 144t I 1312 ETAINER ASSY., gov. weight
1’ RETAINER ASSV., gov. weight
WASHER, thrust Sleeve I RETAINER, governor weight
WEIGHT, govc?rnor i :zJ: HUB ASSEMBLY gov. weight
RlHG, 90~. cage retaining I 2285 i RING, flexilbfe retainino
NOTE: Use Sorina
---
I_- = - - #21256
--__ With Sleeve #22327 Onlv.
I.__ =
LINKAGE GROUP
WASHER,throttle shaft 1 16168 1 WASHER,throttle shaft seal
NUT, max. travel screw 1 12173 1 PIN, vacuum mlodule drive
RING, shaft retaining
SCREW, low idle 1 21646 : SEAL. throttle shaft
;
SPRING, low idle screw 1 !1358 i
1 tiOOK.ASSY., g#ov. linkage
SHAFT ASSEMBLY, throttle 1 !2068 I LINKAGE AXY., governor
1 ; SCREW, gov. linkage hook
WASHER, gov. linkage hook
!;CREW,max. throttle travc 1 !1712 i .-1,
t HOOK, governor linkage
b",
, 1 SPRING, qov. linkage hook
DB2825PC3633 AUTOMATICADVANCEGROUP I
Page 3 of 3
NUT, trilrmer screw 1 SCREW, advance adjusting
1 SEAL, advance adj. screw
1 PLUG, piston hole (spring)
SEAL, piston hole plu(l
GUIDE, advance adj. spring
PISTON, spring '2144 SPRING, outer advance
WASHER,slide !622 SPRING,, inner advance or
21911 Spring, inner advance
!'ISTON, power 1227 2 SEAL, lnead locating screw
SEAL, piston hole plu:l 1113
1 SCREW,ASSI:MBLY.head locatinq
PLUG, .piston hole 241 240 IS req'd.
1 SEAL, (advance screw hole plug
SEAL, piston hole plug i764
SCREW, cam advance ,438
__F 15739 1 PLUG, advance screw hole
= -- ::
ELE~RIC SHUT-OFF GROW (E.T.R.)
21618 1 INSULA'IOR, terminal
14760 2 .OCKNUT, terminal contact
21518 rerminal, electric shut-off
STRAP, terminal grounding 12049 : .OCKWA!;HER,terminal contact
LOCKWASHER,cover screw 12519 2 IUT. termmnal contact
LOCKWASHER,terminal contacl JASHER,,terminal insulating
12500 2
WASHER, terminal contact
SOLENOID FRAME6 ARM ASSY. 1 SOLENOID FRAME6 ARU ASSEMBL'I
FOR SERVIC1: USE ONLY
APPLICABLE SERVICE ASSEMBLIES
__
THROTTLE SHAFT BUSHING REPLACEMENT
I'MIN/MAX GOVERNOR Kr1' #22726 or #23185
**IDLE SPRING KII (~~360) #23160
Housing Kit (SB367) #23274
