Roper G12-436 - Manual (Page 13)

5. INSTRUCTIONS FOR ASSEMBLY OF A TYPE “BHB” HYDRAULIC
DRIVE
1. Refer to Section 3, INSTRUCTIONS FOR PUMP ASSEMBLY, steps 1 – 5. For installing packing, refer to
steps 7 – 18. For installing mechanical seal, refer to steps 28 – 38.
2. Refer to sectional drawing (Figure 7.3) for TYPE “BHB” HYDRAULIC DRIVE COUPLING ASSEMBLY.
3. Secure bracket (51) to backplate (6A, B) using four socket head cap screws (AD).
4. Install key (Z) in shaft keyway. Place coupling half (53) on drive shaft (32). Install retaining ring (45). Rotate drive
shaft (32) until setscrew lines up with hole in bracket (52), then tighten setscrew.
5. Install coupling spider (55).
6. Place bracket (52) onto pilot of hydraulic motor. DO NOT secure bracket into place at this time.
7. Place coupling half (54) onto shaft of hydraulic motor to dimension shown. Rotate bracket (52) until hole in
bracket lines up with setscrew on coupling half. Tighten setscrew.
8. Rotate bracket on motor to line up motor mounting holes with bracket holes. Secure bracket (52) to hydraulic
motor using appropriate fasteners.
9. Secure bracket (52) to bracket (51) using six socket head cap screws (AE) and six lockwashers (AF).
10. Read and understand all safety instructions and warnings before installing and operating pump.
6. GEAR REDUCTION UNIT
ALIGNING GHB PINION SHAFT HEIGHT
Refer to Section 7, PARTS LIST.
The pinion shaft of the GHB gear reducer can be positioned at any location over a full 360
°. This must be done before the
gear reducer oil is added. The pinion shaft can be positioned in the following manner.
1. Loosen six hex head cap screws (W).
2. Rotate gear case (44) on six slots in cover (49).
3. If pinion shaft (42) cannot be moved to proper position at this point, remove six hex head cap screws (W) along
with washers (X and Y).
4. Rotate pinion shaft to desired position. Reinstall and tighten six hex head cap screws (W) along with six flat
washers (X) and six lockwashers (Y).
5. If six threaded holes in gear case (44) are not fully visible within cast slots on cover (49), gear reducer will have to
be partially disassembled so that cover (49) can be rotated.
6. Slide gear case (44) off of cover (49).
7. Remove retaining ring (45) from end of pump drive shaft (32).
8. Remove drive gear (46). A gear puller may be necessary.
9. Remove four socket head cap screws (AD).
10. Rotate cover (49) 90 ° and reinstall and tighten four socket head cap screws.
11. Install drive gear (46) on drive shaft (32).
12. Install retaining ring (45).
13. Replace gasket (48) and slip gear case (44) complete with pinion assembly onto cover (49).
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