Hitachi 312350E Reciprocator Repair, Drain Oil Out of Reciprocator, Relieve pressure, page

Reciprocator Repair

Reciprocator Repair

See FIG. 7 and FIG. 9 and Reciprocator Parts, page 18.

• Clean and inspect all parts for wear or damage. Replace worn parts as needed. For best results, always replace all the o-rings and seals when you disassemble the pump. Repair Kit 247455 is available. Parts included in the kit are marked with an asterisk, for example (23*), in the text and drawings. Always replace seals (23* and 24*) and seals (16* and 44*) together.

•Assembly tool 189305 is required for reassem- bling the reciprocator.

•Loctite® 242 thread sealant and Loctite® Primer T or Perma-Loc®115 thread sealant and Perma-Bond®Surface Conditioner I are required. Be sure their shelf life is within the manufacturer’s recommendations.

•Use Loctite® 609 on yoke (9) and rod (12) on page 13, step 9 only. Use Loctite® 242 or Perma-Loc®115 on other threaded surfaces as required.

Drain Oil Out of Reciprocator

Before you begin, drain oil out of reciprocator.

1.Relieve pressure, page 7.

2.Place reciprocator in a drain pan.

3, 39, 2 36, 37

32

43

46 (hidden from view)

ti10602a

FIG. 7

See FIG. 7 for steps 1-3, except where noted.

1.Place adapter (43) in a vise. Remove four cap- screws (46). Pull bottom cap (32) off adapter (43). If needed, replace seals as described on page 10.

2.Loosen both nuts on fluid tube (45). Use a wrench to rotate tube fittings (1, 60) to the side and then remove tube (45). Check o-rings (1a, 60a) on fittings and replace them if they are worn or damaged. Install plugs in fittings to prevent contamination. See FIG. 4 and Reciprocator Parts drawing, page 18.

3.Remove capscrew (3), nuts (36) and lockwashers (37) on top of reciprocator.

12 312350E