GMC 4000 Series Service Manual page 515

Sec. 9B
Page 504
POWER STEERING
TRUCK
MODEL
S T E E L T IL T CA B M O D E L S ...................................
P S -4 5 00 ...................................................................
EM-4500-5500-6500............................................
ES-5500, SS-5 5 0 0 ........................................
SM-5500-6500 ..................................................................
SG-5500, EG-5500-6500.................................................................................... 549-DV-194
Th ru st Bearing P relo ad .......................................................................................................................................................................... 1 to 3 inch-pounds in access
T h ru st Bearing Adjustm ent
Plus Seal Drag......................................................................................................................................................................................8 inch-pounds maximum.
Pitman Shaft Prelo ad ............................................................................................................................................................................. 4 to 8 inch pounds in access
Final Over-Center Reading— (Total of
Valve and Seal Drag, Worm Bearing
Preload, and Lash A djuster P relo ad ).............................................................................................................................................. 16 inch-pounds m aximum.
POWER S T E E R IN G GEAR
Hose Fittings-to-Ports......................................................................................................................................
Adjuster P lu g .....................................................................................................................................................
Side Cover-to-Housing.....................................................................................................................................
Lash A djuster S c re w ........................................................................................................................................
Control Valve-to-Steering G e a r......................................................................................................................
POWER S T EE R IN G PUMP P U LLE Y
Except In-Line En g in e......................................................................................................................................
In-Line En g in e...................................................................................................................................................
S T E E R IN G G EAR-TO -FRAM E BO LT
E, S Models and PS-4500............................................................................................................................
T ilt C a b s..............................................................................................................................................................
Pump to Mounting B ra c k e t.................................................................................................................................
PUMP STUD-TO -M O UNTING B R A C K E T (When Used)
Except In-Line En g in e......................................................................................................................................
In-Line En gine...................................................................................................................................................
CYLIN D E R ANCHOR S TU D -TO -A X LE
T ilt Cab M odels.................................................................................................................................................
E. S Models ....................................................................................................................................................
PS4500
C Y LIN D E R -T O -T IE ROD U -BO LT
T ilt Cab M odels.................................................................................................................................................
E. S M odels........................................................................................................................................................
PS4500................................................................................................................................................................
Cylinder Socket Clamp (Except P S 4 5 00 ).........................................................................................................
Cylinder-to-Tie Rod Bracket (P S 4 5 0 0 )............................................................................................................
Oil Cooler-to-Radiator S u p p o rt..........................................................................................................................
(2 ) Torque as indicated, then tighten to next notch to insert cotter pin.
TRUCK MODEL
LV, LA-4000................................................................................................................................................................................................................................. 235-P-49
PS -4 5 00 ...................................................................................................................................................................................................................................... 235
EM-4500-5500-6500.................................................................................................................................................................................................................... 235-P-36
EG, SG-5500, EG-6500................................................................................................................................................................................................................ 235-P-36
ES, SS-5500, ES-6500................................................................................................................................................................................................................235-P-36
SM -5500-6500.............................................................................................................................................................................................................................. 235-P-36
DLV, DLA -4000................................................................................................................................................................................................................... 14-150100-09
G M C S E R V I C E M A N U A L
SPECIFICATIONS
POWER STEERING GEAR SPECIFICATIONS
........ 553-DV-59
STEERING GEAR ADJUSTMENTS
P O W E R S T E E R IN G T O R Q U E S P E C IF IC A T IO N S
...............................................................................................................................
HYDRAULIC PUMP APPLICATION CHART
GEAR GEAR
MODEL RATIO
. . 553-DV-54
549-DV-192
549-DV-180
549-DV-192
T Y P E OF P A R T
CENTER
POSITION
28.14-1
28.14-1
28.14-1
28.14-1
28.14-1
28.14-1
of valve assem bly drag.
of total bearing preload and
valve drag.
T O R Q U E F T . L B S .
Nut 50-110
Bolt 25-35
Nut 25-35
Bolt 35-45
Nut 25-30
Nut 65-95
Nut 50-60
Nut 90-110
Bolt 25-30
Nut 16-18
Nut 20-30
Nut 320-420 (2 )
Nut 200-225 (2)
Nut
Nut
Nut
Nut
Bolt 40-50
Nut 25-35
Bolt 10-15
PUM P-M ODEL
-P-122
6 O
12 O'CLO CK
8 O'CL
12 O'
8 O' C
8 O' CLOCK
20-30
50-70 (2 )
35-45
35-45
30-40