115/H115s, 120/H120s/H120Cs, 130/H130s, 140/H140s, 160/H160s, 180/H180s and H195 Hydraulic Hammers Caterpillar

Hydraulic Hammer - Disassemble - H195

Usage:

H195 4XL

Disassembly Procedure

Start By:

Remove the hammer from the housing. Refer to the Service Manual, "Hydraulic Hammer - Remove".
Remove the accumulator. Refer to the Service Manual, "Hydraulic Accumulator - Remove".
Remove the control valve. Refer to the Service Manual, "Control Valve - Remove".

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Personal injury can result from hydraulic oil pressure and hot oil.
Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.

Make sure all of the attachments have been lowered, oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.

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NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat^® products. Dispose of all fluids according to local regulations and mandates.

Place the hammer on 185-3208 Hammer Stand. Refer to FT-2639 for the prints for the pins that are required to hold the hammer on the stand.
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Illustration 1 g00696722
Remove O-rings (1) from the top of upper seal carrier (3).
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Illustration 2 g00696905
Remove locator pin (2) from upper seal carrier (3).
Lift upper seal carrier (3) from cylinder (7). Use a suitable lifting device in order to lift the upper seal carrier. The weight of the upper seal carrier is 140 kg (309 lb).
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Illustration 3 g00696916
Remove seals (4) from the bore of upper seal carrier (3). Remove O-ring (5) from the bottom of upper seal carrier.
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Illustration 4 g00696920
Remove locator pin (6) from top of cylinder (7).
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Illustration 5 g00696906
Lift cylinder (7), piston (18), and lower seal carrier (15) from head (11). Use a suitable lifting device in order to lift the cylinder. The weight of the cylinder, the piston, and the lower seal carrier is 626 kg (1380 lb). Place the cylinder, the piston, and the lower seal carrier on a suitable surface. Check the piston for cracks or for damage.
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Illustration 6 g00696922
Remove the three threaded rods (16). Remove lower seal carrier (15) from the bottom of cylinder (7). Use a suitable lifting device in order to remove lower seal carrier (17). The weight of the seal carrier is 111 kg (245 lb).
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Illustration 7 g00697036
Remove O-rings (8) from top of lower seal carrier (15). Remove O-rings (17) from top of lower seal carrier (15).
Remove seals (14) from the bore of lower seal carrier (15).
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Illustration 8 g00697046
Remove piston (18) from cylinder (7). Use a suitable lifting device in order to remove piston (18). The weight of the piston is 260 kg (573 lb).
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Illustration 9 g00697068

Note: Record the alignment of the wedge and the inner bore of the head.
Remove wedge (9) and O-ring (10) from the bore of head (11).
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Illustration 10 g00697052
Remove thrust ring (13) from head (11). Use a suitable lifting device in order to lift thrust ring (13). The weight of the thrust ring is 72 kg (159 lb).
Remove head (11) from the hammer stand. Use a suitable lifting device in order to lift the head. The weight of the head is 1200 kg (2646 lb). Lay the head on the side on a surface that is level and solid.
Remove upper tool bushing (12) from head (11). Check head (11) for cracks or for damage.