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CHAPTER 4. OVERHAUL INSTRUCTIONS
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TM-5-4320-254-14 Pump Centrifugal Gasoline Engine Driven (MIL STD) 600 GPM (E.C. Schleyer Pump (O. Model 36M-SPS3011G-T) Manual
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REASSEMBLY - TM-5-4320-254-140055
D. REASSEMBLY
1.
Install the pilot bushing (43) in the spline coupling (42). Install the spline coupling on the engine flywheel and secure
with four lock washers (41) and screws (40).
2.
Install oil seals (32) in intermediate housing (31) and bearing retainer (36) respectively.
3.
Position bearing (35) on impeller shaft (38), install retaining rings (34). Install bearing retainer (36) on impeller shaft
(38).
CAUTION: Lubricate bearing with grease conforming to MIL-G-23827 prior to assembly. Apply grease lightly to
impeller shaft surfaces before installation.
4.
Install impeller shaft (38) into intermediate housing (31). Secure with retaining ring (37).
E. INSTALLATION
1.
Aline and install the intermediate housing (31) and intermediate guard (45) on the engine and secure with eight lock
washers (47) and cap screws (46).
2.
Install the stationary element (23) into the seal cavity of the seal plate (25).
CAUTION: The seal plate should be clean and the seal cavity bore lightly lubricated in its entirety with oil MIL-L-2104
grade 10. The stationary element should be installed in the seal plate with the lapped face towards the pump.
Extreme care should be used to make sure the lapped face is not marred when installing. Care should also be used
to make sure that the stationary seal element is installed into the complete depth of the cavity bore. If this is not
done, or the lapped surface is marred or dirty, the seal will leak when the pump is placed back in service.
3.
Install seal plate (25) on intermediate housing (31).
CAUTION: Use care not to displace the seal stationary component when placing seal plate over shaft (38).
4.
Lubricate with oil MIL-L-2104 grade 10 the internal diameter of the rubber sleeve portion of the seal rotary element
(22) and insert shaft sleeve (26) (so that the internally beveled end will be towards engine) into rubber sleeve bore
until sleeve end is approx. even with lapped face of seal rotary element.
5.
Install the shaft sleeve (26) on shaft (38) so that lapped surface of seal rotary element and beveled end of sleeve is
toward shaft intermediate housing (31). Push shaft sleeve until it seats on shaft shoulder.
CAUTION: Before this operation, be sure that lapped surfaces of the seal rotary and stationary components are free
of dust and foreign material and are lightly lubricated with MIL-L-2104 grade 10 oil.
6.
Install shim set (20) on shaft (38). Refer to para. 4-2. D CAUTION remark.
CAUTION: The total thickness of shims should allow an initial clearance of 015 - .020 inches between the face of the
seal plate and the adjacent face of the impeller when the impeller is tightly screwed on the shaft.
7.
Screw impeller (19) onto impeller shaft (38).
4-4.
VOLUTE CASING (Fig, 4-1)
A. REMOVAL - Refer to para. 4-2 and remove the volute casing.
B. DISASSEMBLY
1.
Remove the four nuts (2) and remove the suction adapter (3) and the check valve assembly (4).
2.
Remove the two nuts (10) and lock washers (11), and remove the wear plate (18).
3.
Remove the discharge elbow (13), eight nuts (14), discharge flange (15), and gasket (16).
4.
Remove the drain plug (29), priming plug (12), four studs (27), sixteen studs (17), if necessary, from the volute
casing (28).
C. CLEANING, INSPECTION, AND REPAIR
1.
Clean all parts with an approved cleaning solvent. Dry thoroughly.
2.
Inspect parts for cracks, breaks, damaged threads, and- other damage.
26

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