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| Illustration 1 | g01381942 |
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(1) Piston
(2) Thrust ring (3) Upper tool bushing (4) Bushing (5) Screw (6) Accumulator (7) Control valve (8) Carrier (9) Cylinder (10) Front head (11) Bolt (12) Tie rod (13) Tie rod nut | |
Recommended operating pressure ...
Note: The operating pressure of the hammer will vary with the amount of back pressure, input flow, and the hardness of the material. The operating pressure of the hammer will be lower during operation against a harder material such as a steel plate. The operating pressure of the hammer will be higher during operation against a softer material such as rock or concrete.
| Assemble the hammer by using the appropriate lifting eyes. | |||
|---|---|---|---|
| Item | Component | Lifting eye | Qty |
| (2) | Thrust ring | "M12 x 1.75" | 2 |
| (10) | Head (front) | "M24 x 3" | 2 |
| (12) | Tie rod | "M12 x 1.75" | 1 |
| (7) | Control valve | "M14 x 2" | 4 |
| (8) | Carrier | "M24 x 3" | 2 |
| (1) | Piston | "M20 x 2.5" | 1 |
| (9) | Cylinder | "M24 x 3" | 2 |
| (6) | Accumulator | "M12 x 1.75" | 3 |
Apply 4C-5598 Anti-Seize Compound to the following components.
- Coat the outside surfaces of the tool bushings (3) and (4).
- Coat the outside surfaces of the thrust ring (2).
- Coat the contact surface of the thrust ring (2) and the tool bushing (3).
- Coat the surfaces of the cylinder (9) that contact the front head (10).
- Coat the threads of all bolts.
- Coat the bores of the front head (11).
- Coat the bores for the tie rods (12) on the valve group (7).
(13) Tie rod nuts must be assembled with the "arrow" pointing upward. The number on the tie rod nut must match the number on the tie rod.
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| Illustration 2 | g00605007 |
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Typical example Section view of thrust ring (2) | |
| Specifications for Thrust Ring (2) | |||
|---|---|---|---|
| Degree of Angle (A) | New Dimension (B) | Maximum Dimension (B) | Diameter (C) |
| 30 REF | |
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Note: If the maximum dimension (B) is exceeded, replace the thrust ring.
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| Illustration 3 | g00736721 |
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Top view of upper tool bushing (4) | |
| Specifications for Upper Tool Bushing (3) | |
| New Diameter (D) | Maximum Diameter (D) |
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Note: If the diameter is close to maximum diameter (D) in one direction more than the other direction, the upper tool bushing may be rotated 90° for additional life.
Note: If maximum diameter (D) is exceeded, replace the upper tool bushing.
(5) Tighten the 8 screws in two stages. Tighten the screws in a cross pattern.
- Tighten to
675 N·m (498 lb ft) . - Tighten to
1350 N·m (996 lb ft) .
(11) Torque for the 4 bolts ...
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| Illustration 4 | g00816197 |
(12) Tighten the 4 tie rods in 4 stages. Tighten the tie rods in a cross pattern. Refer to illustration 4.
- Tighten to
100 N·m (74 lb ft) . - Tighten to
300 N·m (221 lb ft) . - Tighten to
700 N·m (516 lb ft) .Show/hide table
Illustration 5 g01381857 Sheet metal protects the cylinder. - Heat the exposed center portion of tie rods (12) with a propane flame or equivalent to
275° ± 25°C (527° ± 45°F) .Note: Direct the flame away from the cylinder of the hammer. Thin steel sheets may be placed behind the tie rods in order to assist in deflecting the flame from the cylinder. Do not heat the tie rods in one place. Do not overheat the tie rods.
Torque-turn tie rods (12) ... 90 ± 5°
Note: Some minor adjustment may be required to allow the lock plates to be located. Locate the lock plates before allowing the tie rods to cool.
(12) Apply 8T-9014 Silicone Sealant in order to fill the grooves between the front head and the tie rods.
