GMC 4000 Series Service Manual page 516

V A N E T Y P E PUMP
M a k e ................................................................................................................................................................................................. Saginaw Steering Gear Division
T y p e ..................................................................................................................................................................................................................................................Vane
M odel.............................................................................................................................................................................................................................................. 235-P
Capacity Per M inute:
M axim u m ............................................................................................................................................................ 3.5 gpm of Type " A " automatic transm ission
M in im um ............................................................................................................................................................. 2.35 gpm of Type " A " automatic transm ission
Pressure Relief V a lv e :
Minimum P S I .................................................................................................................................................................................................................................900
Maximum P S I .............................................................................................................................................................................................................................. 1000
S L IP P E R T Y P E PUMP
Capacity
Maximum ....................................................................................................................................................................................................................... 3.4-4.1 gpm
M inim um ......................................................................................................................................................................................1.45 gpm when operating pump
Pressure Relief Valve
Minimum P S I ........................................................................................................................................................................................................................ 1000 psi
Maximum P S I ....................................................................................................................................................................................................................... 1100 psi
V A N E T Y P E PUMP
Mounting Bolt or S tu d ...................................................................................................................................................................................................25-40 Ft. Lbs.
Port Fittin g ...................................................................................................................................................................................................................... 25-40 Ft. Lbs.
S L IP P E R T Y P E PUMP
Reservoir Cap S c re w ...................................................................................................................................................................................................... 15-20 Ft. Lbs.
Pressure Relief V a lv e .......................................................................................................................................................................................................... 30 Ft. Lbs.
Front Insert N u t........................................................................................................................................................................................................... 95-105 Ft. Lbs.
M a k e ..................................................................................................................................................................................................Saginaw Steering Gear Division
T y p e .......................................................................................................................................................................................................................................... Hydraulic
All Models, except PS4500 with F040 Axle
Cylinder Part No....................................................................................................................................................................................................................5690726
Retracted Len g th .................................................................................................................................................................................................................... 15.735"
Extended Length.................................................................................................................................................................................................................... 24.795"
Qfmkp
PS4500 with F040 A x le ........................................................................................
C ylin d er Part No....................................................................................................................................................................................................................5691112
Retracted Length..................................................................................................................................................................................................................,16.857"
Extended Length........................................................................................................................................................................................
S tr o k e
...................................................................................................................................................................................................................................... 8 % "
G M C S E R V I C E M A N U A L
SPECIFICATIONS (CONT.)
HYDRAULIC PUMP SPECIFICATIONS
HYDRAULIC PUMP TORQUE SPECIFICATIONS
POWER STEERING POWER CYLINDER SPECIFICATIONS
Page 505
POWER STEERING
fluid at 170°F. tem perature when operating
pump against 50 psi pressure.
fluid at 170°F. tem perature when operating
pump at idle speed against 665/735 psi
pressure.
at idle speed against 665/735
psi pressure
........................ 2 5.335'
Sec. 9B
91/,c"