Bearing Housing and Connecting Rod

Removal

1.

Relieve pressure; page 4.

2.Stop sprayer at bottom of stroke to get crank (E) in lowest position.To lower crank manually, remove spark plug and carefully rotate crank by pulling starter rope.

3.Fig. 3. Remove front cover (13). Unclip drain hose

(108)from pump. Unscrew pump suction tube

(107)from pump. Disconnect pump hose (47).

4.Push up retaining spring (18). Push pin (19) out rear.

19

18

Fig. 2

7675B

5.

Loosen locknut (20). Unscrew displacement

 

pump (21).

6.

Remove four screws and lockwashers (44, 45).

7.

Tap lower rear of bearing housing (17) with a

 

plastic mallet to loosen from drive housing (12).

 

Pull bearing housing and connecting rod assembly

 

(14) straight off drive housing.

8.

Remove pail hanger (59) and install it on new

 

bearing housing.

3.Clean mating surfaces of bearing and drive hous- ings (17, 12).

4.Align connecting rod (14) with crank (E) and drive housing locating pins (12b) with bearing housing (17) holes. Push bearing housing onto drive hous- ing or tap into place with plastic mallet.

CAUTION

Do not use bearing housing screws (44) to align or seat bearing housing; this may cause bearing and drive housing misalignment and result in premature bearing wear.

5.Install screws and lockwashers (44, 45). Tighten screws evenly to 25 ft-lb (34 N￿m).

6.Install pump; page 14.

7.Fig. 3. Install remaining parts.

1 B

C

2

 

 

D

2

 

 

14

 

 

45, 44

3

13

E

12

12b

57

17

18

19

47

9. Inspect crank (E) for excessive wear and replace

parts as needed.

Installation

1. Evenly lubricate inside of bronze bearing (B) in

bearing housing (17) with high-quality motor oil.

Liberally pack top roller bearing (C), lower bearing

108

1Oil

20

59

21

106

(D) inside connecting rod assembly (14) with

bearing grease 114819.

2. Assemble connecting rod (14) and bearing

housing (17).

2

107

Pack with bearing grease 114819

3

Torque to 25 ft-lb (34 N m)

￿

Fig. 3

8697A

 

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Image 7
Hitachi 232624 dimensions Bearing Housing and Connecting Rod, Removal