GMC 1989 Light Duty Truck, Руководство по ремонту, Страница: 133 / 998

POWER STEERING 3B3-19
Figure 43— Installing the Rotor Figure 45— Installing the Retaining Ring
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P
c y
12
N. H o u s in g A lig n m e n t
In d e n ta tio n s
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P. Id e n tific a tio n M arks
J
o n P um p R ing
12
. O -R ing Seal
F-02158
Figure 44—Aligning and Installing the Pump Ring
SAGINAW POWER STEERING PUM P— MODEL P
DISASSEMBLY
CLEANING AND INSPECTION
«--► Remove or Disconnect (Figure 46)
4.
5.
6.
Clean the exterior of the pump with solvent and cro­
cus cloth.
Bolt (71) and fitting (73).
Reservoir (70) and seals (69).
End plate retaining ring (
68 ) using a screwdriver and
punch.
• End plate (67) and pressure plate spring (
66
).
O-ring (60), C ontrol valve (58), and control valve
spring (59).
Pressure plate (65). Tap lightly on the driveshaft with
a rubber mallet.
Pump ring (64) and vanes (63).
• Shaft retaining ring (62), pump rotor (61) and
thrust plate (56).
Driveshaft (50).
Seal (51) from the housing (53).
• Dowel pins (55) and O-rings (54).
• Seal (52).
i g i
L 9
Clean
All parts with solvent and blow dry.
Inspect (Figure 46)
Rotating group com ponents.
— Vane (63) tips for scoring or wear.
— Fit of vanes (63) in rotor (61) for sticking or
excessive play.
— Rotor slots for burrs and excessive wear at the
thrust faces.
— Inner surface of the pump ring (64) for scoring or
wear.
— Thrust plate (56) and pressure plate (65) for
wear on plate surfaces.
— If heavy wear is present, or parts are faulty,
replace the entire rotating group.
Seal (51) for leakage, cracking or swelling. If so,
replace seal.
Driveshaft (50) for excessive burning or scoring.
Control valve (58). It must move sm oothly in the valve
bore.