MCi Crusader II 1989 Maintenance Manual page 371

Date
1-1-8.9
Page· ____ . __
11_-_30 _ _
MC-9 MAINTENANCE MANUAL
7.
Mount the cover in a vise. Drive out the retaining pin
(23)
with a suitable punch.
8. Protect the control valve plug (19) and subassembly
against falling from the bore. Work the plug
(19),
control valve
(20)
and spring
(21)
from the bore.
NOTE: Access to the control valve plug and
control valve subassembly
may
be gained
through the large chamfered hole which
leads to the control valve bore from Inside
the cover.
9. Remove outer retaining ring
(1)
from the pump body
(11).
10.
Support the shaft end
(3)
of the pump body
(11)
in a 2
inch (50.8 mm) straight pipe coupling, and using an arbor press.
remove shaft
(3).
The shaft assembly should drop through a slot
in the press table so that the shaft will not be damaged.
11. Remove inner retaining ring
(5)
and ball bearing (4) from
shaft (3).
12.
Press shaft seal (6) from the pump body.
INSPECTION AND REPAIR
1. Wash all parts, except seals, in clean mineral spirits and
lay them aside for inspection. Replace all old seals and 0-rings
at reassembly.
2. Inspect surfaces of ring
(15)
rotor (13), vanes
(14),
pres-
sure plate (17) and body (11) which are subject to wear. Light
scoring may be removed from the faces of the body or wear
plate with crocus cloth (by placing the cloth on a flat surface).
medium India stone or
by
lapping.
· 3. Check edges of vanes
(14)
for wear. Vanes must not have
excessive play in stots or burrs on edges. Replace if necessary.
4. Check each rotor slot for sticky vanes or wear. Vanes
should drop into rotor slots by their own weight when both slot
and vane are dry.
5. Insert the control valve
(20)
in its bore in pump cover.
· There should be no binding.
6. Check the valve
(20)
and bore for excessive wear and
scoring. Replace if necessary.
7. Wash bearing
(4)
.thoroughly. Inspect and replace if worn
or damaged.
8. Replace the shaft seal (6) at each overhaul to prevent oil
leakage. Check the drive shaft oil seal diameter for wear and
scoring. Do not install a new seal on a shaft which is worn or
damaged at the oil seal diameter. Replace the shaft (3) if worn.
9. Stone and polish the sharp edges on the shaft to prevent
damage to the seal (6).
10.
Stone all mating surfaces of body and cover with a
medium India stone to remove all burrs and sharp edges. Re-
wash all parts after stoning.
REASSEMBLY
NOTE_: Immerse all parts in clean 10W-40
engine oil to facilitate reassembly.
1. Starting with the shaft end, press the inner needle bearing
(12} in the pump body ( 11) using an arbor press.
2. Assemble the retaining ring (5) on the shoulder portion of
the shaft (3) and install the shaft in the pump body (11).
3. Press the outer bearing onto the shaft. The edge of the
bearing must be
1 /64" (.39
mm) below the shaft seal shoulder
when assembled. This provides for shaft end play of
.010-.015"
(.254-.381
mm).
NOTE: Tools for Installing bearings can be
made from round
stock
with an outside
diameter slightly smaller than that of the
bearing and the Inside diameter lllghtly
larger than the shaft diameter. Do not score
or damage the shaft (3) during this
operation.
4. Position the shaft seal
(6)
on the shaft end of the body ( 11 ),
being careful not to damage the seal.
5. Using the special tool mentioned above. press seal
(6)
in
until it locates against the shoulder in the pump body (11 ). This
shoulder acts as a positive stop for the seal. Do not overpress as
this will result in damage to the seal.
6. Install the locating pins (16) in the pump body (11).
7. Install the ring (15) over the pins
(16)
according to the
correct direction of rotation.
8. Install the rotor
(13)
with the chamfered edge of the
splined hole "in" toward the pump body
(11 ).
9. Install the vanes
(14)
with their radius edge toward the
inner ring contour. .
10.
Oil the cartridge with clean engine oil and install the
pressure plate (17).
11. Install the presure plate spring
(18)
and cover
(28).
12. ·
Tighten cover screws to
25-30
ft. lbs. (34-40 Nm) torque.
13.
Install the pressure compensating spring
(21)
into the
control valve bore.
14.
Insert the valve assembly
(20)
with the hex toward tt,e
spring
(21).
15.
Install plug (19) with the 0-ring into the bore and hold it
in position while driving in a new retaining pin
(23).
16. Install !he 0-rings (7 & 8) in the pump body (11) and
secure the manifold (26) to the pump cover
(28)
with three
screws
(24).
The copper washers
(25)
are used on the three
screws
(24)
where the tapped hole enters the oil passage.
Figure 11•105. Power Steering Filter - Installed.