Hitachi 220-856, SERIES D manual Connecting Rod and Bearing Housing, Detail a

Connecting Rod and Bearing Housing

WARNING

INJECTION HAZARD

To reduce the risk of serious bodily injury, follow the Pressure Relief Proce- dure Warning on page 11 before check-

ing or repairing any part of the spray system.

NOTE: Refer to Fig. 16.

1.Remove the pail hanger (7).

2.Remove the front cover (12).

3.Remove the pump as described on page 14.

4.Remove the four screws (9) and lockwashers (10). Pull the bearing housing (51) and connecting rod assembly (52) off the crankshaft (C).

5.Clean and inspect the crankshaft (C). Wipe it clean with a rag (don't use solvent). If the crankshaft is badly worn, replace the drive assembly (14). See page 21.

6.Clean and inspect the bearing housing (51) and connecting rod (52), including the needle bearing

(A). Replace both parts if either is worn or dam- aged. See Detail A.

7.Clean the mating surfaces of the bearing and drive housings.

CAUTION

To extend the service life of the connecting rod bearing, lubricate it properly. After every 100 hours of operation, or whenever servicing the pump (whichev- er comes first), fill the cavity (B) in the connecting rod with SAE non-detergent motor oil. See Detail A.

8.Coat the surfaces of the connecting rod and bear- ing with SAE non-detergent motor oil. Liberally pack the needle bearing (A) with industrial grade, heavy duty, extreme pressure, lithium soap grease. See Detail A.

9.Assemble the connecting rod (52) and bearing housing (51).

10.Align the connecting rod (52) with the crank (C) and push the bearing housing (51) onto the drive housing (14).

11.Assemble the remaining parts. Refer to page 14 to reinstall the pump.

Detail A

A

B

14

C

52

51

10

9

1312

5

	49
	50
7	6	30
		32

Fig. 16 01750B

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