GMC 1982 Light Duty Truck Service Manual page 275

REMOVE AND IN STALL DRIVE SHAFT SEAL
W ITHO UT DISASSEMBLING THE PUMP.
REMOVE
INSTALL
1. PROTECT DRIVE SHAFT
1. C O A T DRIVE SHAFT SEAL
W ITH SH IM STOCK.
2. USE C H IS E L TO CUT
SEAL AND REMOVE.
HISEL
DRIVE SHAFT
SH IM STOCK
HYDRAULIC PUMP ASSEMBLY
2. REMOVE AND IN S TA LL PUMP RESERVOIR ASSEMBLY
REMOVE INSTALL
1. D RAIN O IL FROM RESERVOIR
1.
ASSEMBLY BEFORE REMOVAL.
2. REMOVE PARTS AS SHOWN
2. IN S T A L . PARTS AS SHOWN.
w e l c h p l u g
DO NOT REMOVE.
IF DEFORWCD OR DISLODGED,
REPLACE HOUSING ASSEMBLY
MAGNET
CLE A N BEFORE
REASSEMBLY.
- O-R NG 5EA.5
- H O U S IN G ASSEMBLE
3. REMOVE AND IN STALL END PLATE.
REMOVE
I. REFER TO !N SET r OR
R E T A IN IN G R 'NG R F M O /A .
SCRFWDRIVER
rP U N C H
REMOVE R E T A iN .N G R'NG
END PLATE
PRESSURE P L A T E -'.
P O S I T I O N I N G
SPRING
'- E N D PLA T F R E T A IN IN G RING
-C O N T R O L VALV E ASSEMBLY
FLOW CO NTRO L SPRING
HO USING ASSEMBLY
.- N O T IC E : BEFORE PROCEEDING. EXAM IN E TH IS
PART OF THE DRIVE SHAFT. IF IT IS CORRODED. C LEA N W ITH
CROCUS C L O T H BEFORE REM O VING. T H IS W ILL PREVENT
DAMAGE TO THE SHAFT BUSHING W HICH M IG H T REQUIRE
. REPLACEMENT OF THE ENTIR E HOUSING.
W ITH H YDRA ULIC PUMP
FLUID. REFER TO INSET FOR
DRIVE SHAFT SEAL IN S T A L L A T IO N .
! 1
( Q , -------TO O L J -7 7 2 8
! U |
-D R IV E SHAFT I
SEAL * I
'N S T A L L DRIVE SHAFT SEAL.
USE NEW SEALS AND LUBR ICATE
A .
l l
W ITH POWER STEERING FLU ID BEFORE
i n s t a l l a t i o n
RES E R vO iP CAP ASSEMBLY
S TJD OR BO T
l
t OPQJE t O 35 N m
c t T:N G ASSEMBLE
TORQUE TO 50 N rn
\
0 - R NG S E A l
- R fS E R .O 0 ASSEMBLY
D J J P
IN S T A LL
^ J 8 R CATE END » A r F AND
RE r A N .N G R'NG , N S T A L .
PARTS AS SHOWN. REr ER TO
iN SET ^O R P O S 'T 'O N iN G OF
RETA N 'N G R 'N G !\ HOUSING.
PRESS-! . R E T A IN IN G r i n g
'
J U LO C A TE RING GAP
AT P O S iT iO N SHOWN
O F R E T A 'N IN G R IN G .
Fig. 3B3-50--Power Steering Pump O verhaul
POWER STEERING SYSTEM 3B3-19
4. REMOVE AND IN S TA LL R O T A TIN G GROUP.
REMOVE
INSTALL
1. USING A RUBBER M A LLE T,
1. IN S T A LL PARTS AS SHOWN ON
TAP L IG H T L Y ON DRIVE
DRIVE SHAFT. IN S T A LL NEW
SHAFT U N T IL PRESSURE
R E T A IN IN G RING ON DRIVE
PLATE IS FREE S HAFT AND IN S T A LL IN PUMP
2. REMOVE R E T A IN IN G RING
HOUSING.
FROM DRIVE SHAFT AND
2. REFER TO INSET FOR P O S IT IO N IN G
DISCARD. REMOVE PARTS
OF PUMP RIN G IN HOUSING.
AS SHOWN.
PRESSURE PLATE
VANES
NOTICE:
IN S T A LL W ITH
ROUNDED EDGE OF
VANES OUTWARD.
SHAFT, ROTOR AND THRUST
PLATE ASSEMBLY
HOUSING ASSEMBLY
^PU M P ROTOR
THRUST PLATE
-D R IV E SHAFT
R E T A IN IN G R !NG REMOVAL
5. REMOVE AND IN S TA LL DRIVE SHAFT AND
O -R IN G SEALS.
IN S T A LL
REMOVE
REFER TO THE INSET FOR DRIVE
REMOVE P AR T S
SHAFT SEAL IN S T A L L A T IO N .
AS SHOWN.
USE ALL NEW SEALS AND
LUBR ICATE SEALS W ITH POWER
- TOOL J - 7 7 2 8
STEERING FLUID BEFORE
IN S T A L L A T IO N
IN S T A LL PARTS AS SHOWN.
\ S T A__ DR vF S H A F T SE A. .
0 R 'N G SEALS
- O J S NG ASSEMBLY
i i
DPiVE S H A F S E A .
t
ARROW
IN S T A LL PUMP RING.
PUMP RING
SHAFT R E TA IN IN G
RING
o o w e l
p i n s