Jeep UNIVERSAL CJ-2A - Page 44

'Jeep' UNIVERSAL and 'Jeep' DISPATCHER
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FIG. 52-0IL PUMP- LATE TYPE
1-Cover Screw
2-Cover
3~Cover Gasket
4-Shaft ·and Rotors
5-Body Assembly
6-Driven Gear
After assembling the gear on the pump shaft, check
the running clearance between the gear and pump
body with a feeler gauge. This clearance should be
from .003" to .010" [0,0762 a 0,254 mm.].
The early production pump is disassembled in the
same manner as the later pump. Standard end play
of the rotor gear is .002" to .005" [0,0508 a 0,127
mm.]. End float of the pump shaft is .002" to .004"
[0,0508 a 0,1016 mm.] which is secured by selection
of parts or installing an extra cover gasket. After
being reinstalled, the pump should be primed before
starting the engine. Remove the cover plug and fill
the pump housing with oil of the same grade used
in the engine. Replace the cover plug.
FIG. 53-QIL PUMP - EARLY TYPE
1-Cover to Body Screw
2-Cover to Body Screw Gasket
3-Cover Plug
4-Cover
5-Pinion
6-Rotor Disc
7-Shaft Assembly
8-Shaft Gasket
9-Cover Gasket
10-Qil Pump to Block Gasket
11-Driven Gear Pin
12-Driven Gear
13-0il Pump Body
14-0il Relief Spring Retainer
15-0il Relief Spring Retainer
Gask~t
16-Relief Spring Shims
17-Relief Plunger Spring
18-Relief Plunger
7-Pump Gasket
8-Gear Retaining Pin
9-Relief Valve Retainer
10-Relief Valve Retainer Gasket
11-Relief Valve Spring
12-Relief Valve Plunger
Maximum pressure of both pumps is controlled by
a similar oil relief valve. The oil pressure relief
spring is calibrated. Never stretch this spring to
alter the relief valve pressure setting. Adjust pres-
sure setting by the use of shims only. Shims are
available that can be added between the retainer
FIG. 54--CHECKING OIL PUMP ROTORS
and the spring to increase pressure. When shims
are present, removing shims will decrease pressure.
Thisadjustment will change the pressure at higher
speeds
but not at idle speed.
Safe minimum pressure is 6 lb. [0,421 kg-cm2) 'at
idle, at which point the oil pressure light goes out
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