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4.2.7 Disassembly – Oil Pump Housing
1. Refer drawing # CRA-352-1 in section 4.2.1
2. Before dismantling, ensure compressor is completely de-pressured.
3. Drain oil from crankcase.
4. Remove ½” Capscrews (15 off) that hold the oil pump housing in place.
5. Carefully remove oil pump housing..
6. Check condition of all o-rings about the oil pump housing sealing face.
7. Check condition of sight glass o-rings. Replace if necessary.
8. Remove seal cover cap (CR-3554) and check condition of oil restrictor plate
(CR-3541) & O' ring (ORN-7228). Replace if necessary.
9. Remove pressure relief valve assembly (CRA-333). See procedure below.
4.2.8 Disassembly – Oil Pump Relief Valve
1. Refer drawing # CRA-333 in section 4.2.5.
2. Remove relief valve adjustment screw.
3. Screw ½” UNF Capscrew from special tools into o-ring retainer (CR-3333).
4. Use screw to remove O-Ring retainer.
5. Relief valve plunger and spring will drop out of oil pump housing.
6. Check condition of O-Rings; spring; etc.
4.2.9 Disassembly – Oil Pump
1. Refer drawing # CRA-357 in section 4.2.3
2. Remove the oil pump housing from crankcase as described in section 4.2.2
3. Check condition of oil pump drive gear (CR-357) & oil pump drive key
(CR-3575) on crankshaft.
4. Remove oil pump driven gear (CR-356) and hex drive key (CR-3571).
Check condition.
5. Remove oil pump retainer (CR-3591)
6. Check condition of oil pump bush (CR-360) and thrust ring (CR-3582).
7. Remove oil pump impellor assembly (CR-3579) and check for signs of
wear.
8. Remove Wear Plate (CR-3524) and check sign for wear, if necessary
replace with new.
Intermech Ltd. BBR-6015-2 Compressor Service Manual
