Hitachi 312350E important safety instructions Allow 24 hours to cure before operating reciprocator

	3, 39, 2
36, 37
30	13*
31
	29
38
	26
6, 7	51 2
9			45
12		25

122

24*

23*, 49*	34
20
32	13*
	17
21
	20
	18

ti10605a

1Torque to 40 to 48 ft-lbs (54 to 65 N.m)

2 Torque to 54 to 56 in-lbs (6.1 to 6.3 N.m)

FIG. 8

See FIG. 8 and Reciprocator Parts page 18 for steps 4-20, except where noted.

4.Tap bottom of displacement rod (34) with a plastic mallet to loosen cylinder (25).

5.Grasp valve spool (31) and pull it off cylinder and tie rods (38). Pull cylinder and piston off bottom cap (32). It is not necessary to remove tie rods from bot- tom cap.

Reciprocator Repair

6.Lay assembly on its side. Place a clean rag around yoke (9) to prevent losing detent balls. Slide yoke (9) sideways off valve sleeve (29) while holding the balls (7) and spring (6) in place.

7.Slide cylinder (25) off displacement rod (34). Hold hex end of displacement rod in a vise and use a spanner wrench in pin holes of the piston (22) to screw it off the rod.

12

20

21

20

18

ti10605a

FIG. 9

8.(FIG. 9) Visually inspect the spring (21). If there is wear or damage, remove nut (18), spring (21) and retainers (20) from trip rod (12). Reassemble with a retainer (20) on each end of the new spring (21). You must thread nut onto rod until it runs out of thread, so that it bottoms out on rod’s shoulder.

• If you are re-using or reassembling any parts, use a surface cleaner such as chlorinated sol- vent on the threads and blow with compressed air. A 1/4-28 UNF-2A tap can be used to remove adhesive from internal threads of yoke

(9).

•Thread sealant and primer are required. See Reciprocator Repair Notes, page 12 for specifi- cations. Loctite® 609 is used only in Step 9.

9.Apply fresh Loctite® 609 thread sealant to first two or three internal threads of yoke (9). Apply primer to external threads of rod (12). Let primer dry for 3-4 minutes. Assemble, torquing screw to 54-56 in-lbs (6.1 to 6.3 N.m). Remove excess sealant.

Allow 24 hours to cure before operating reciprocator.

312350E 13