Service manual

17. Remove seal housing (9), with lip seals (32), from shaft (6).

18. If lip seals (32) are to be replaced, remove and discard them from seal housing (9)..

19. If ball bearing (31) is to be replaced, remove snap ring (33) from shaft (6), press ball bearing (31) off shaft

(6) and discard.

20. If inside lip seal (51) is to be replaced remove and discard lip seal (51).

H. INSPECTION OF PARTS

1. BALL BEARING – Ball bearings should be free turning and quiet. Their grease should have a soft

consistency and not look or smell burned.

2. GEAR FACES – Some light scratching is acceptable, but if there is any scoring, the part should be replaced.

These faces cannot be ground to remove a heavy score mark because their width is critical to performance

of pump. Grinding more than several ten thousandths of an inch will cause low capacity. If the face is not

flat, pump seizure could occur.

NOTE: Rework other than light stoning or cleaning of gears or gear housings is not recommended. New gear

housings are provided with sleeve bearing factory installed.

3. RING GEAR OD – Light scratching and polishing is acceptable. If scoring is present, ring gear should be

replaced.

4. HO

USING

a. Faces – Some light scratching is acceptable, but if there is any scoring, the part should be replaced.

b. Crescent – This piece should be checked for gouges or scoring. If the marking is severe, housing

should be replaced.

c. ID – If any scoring is present, housing should be replaced.

5. SHAFT – Check shaft for wear, particularly areas where lip seals and bushings are located when pump is

assembled. Any heavy wear is cause for shaft replacement. Check edges of keyways for cracks, chipping or

rounding. If any of these exists, shaft should be replaced.

6. SLEEVE BEARING – If scoring or heavy polishing is present, bearing must be pressed out of housing,

replaced and sized (see machining instructions on next page).

7. FRONT AND INTERMEDIATE COVERS – If faces are scored or heavily scratched, they must be

machined per machining instructions. Check ball bearing seating area in front cover after severe ball bearing

failure. If ball bearing seating OD is badly scored, deburr it before pump assembly.

I. MACHINING INSTRUCTIONS

The front cover (2) and intermediate cover (5) can usually be restored to as-new condition by machining

damaged faces. Sleeve bushings (53), (54) usually require replacement when cover is machined.

o repair damage to face of front cover and intermediate cover (Figure 2) and to replace sleeve bushings (C)

proceed as follows:

1. Press out sleeve bushing (53), (54) from front of intermediate cover.

NOTE: If pump is equipped with bronze bearing, consult factory.

2. Place front cover or intermediate cover in a lathe and indicate face (A) and counterbore (B) square and

concentric with respect to bore (C) within .0008 inch TIR.