Disassembly Procedure
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Table 1
| Required Tools |
| Tool |
Part Number |
Part Description |
Qty |
| A |
329-6925 |
Balancer weight locking shaft |
1 |
| B |
1U-7262 |
Telescopic Magnet |
1 |
| C |
1P-0510 |
Driver Gp |
1 |
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| NOTICE |
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Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. |
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Movement of the counterweight can cause personal injury. |
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| Illustration 1 | g01521102 |
- Insert Tooling (A) to balancer unit (3) .
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| Illustration 2 | g01507937 |
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| Illustration 3 | g01519665 |
- Remove bolts (5) and suction pipe.
- Remove joint (6) (not shown).
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Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force. |
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Note: The spring force will be released when the pin is removed.
- Remove pin (7) from balancer (3) .
- Remove cap (8) and remove spring (9) .
- Use tool (B) to remove plunger (10) .
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| Illustration 4 | g01521242 |
- Remove bolts (11) and remove cover (12) .
- Remove bolt (14) (not shown).
- Remove idler gear (13) and washer (15) (not shown) that is behind the idler gear.
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| Illustration 5 | g01508513 |
- Loosen nut (18) .
- Place a suitable distance plate between nut (18) and balancer frame (19) .
- Turn the nut until the nut touches the face of the distance plate. Continue to turn the nut with a suitable spanner until the seal is broken between the splines of the drive shaft (16) and gear (17) .
- Remove nut (18) and remove gear (17) .
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| Illustration 6 | g01521644 |
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| Illustration 7 | g01508542 |
- Carefully remove the drive shaft. Ensure that roller bearings (20) and (21) are not damaged.
- Remove bolts (23) except for the bolt in Position (X) and remove oil pump assembly (22) .
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| Illustration 8 | g01515003 |
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| Illustration 9 | g01515038 |
- Remove bolt (23) and remove oil pump cover (24) from oil pump assembly (22) .
Note: Mark the direction of rotation of inner rotor (25) and outer rotor (26). Make a note of the orientation of the rotors.
- Remove inner rotor (25) .
- Remove outer rotor (26) .
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| Illustration 10 | g01507781 |
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| Illustration 11 | g01507783 |
- Remove bolts (27) .
- Remove rear cover (28) from the locating dowels of the balancer. Make a note of the position of the arrows on the outside of the cover. Refer to Illustration 10 for engines that have the oil filter on the left hand side. Refer to Illustration 11 for engines that have the oil filter on the right hand side of the engine. Illustration 10 and Illustration 11 view the engine from the rear.
Note: There are two plugs in the balancer frame, a short tapered plug with a hexagonal socket head and a long plug with a square socket head. These plugs control the flow of oil through the balancer frame.
Note: The position of the plug is dictated by the location of the oil filter. When the filter is located on the left side the short plug is located in the side of the balancer and the long plug is located in the bottom. When the filter is located on the right side of the engine, the short plug is located in the bottom of the balancer and the long plug is located in the side.
Note: Removal of the plugs in the rear of the balancer frame can cause damage to the threads. If the threads are damaged the balancer frame must be replaced.
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| Illustration 12 | g01515139 |
- Remove bolts (29) from the balancer unit.
- Use a soft faced hammer in order to remove rear section (30) of the balancer frame.
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Movement of the counterweight can cause personal injury. |
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| Illustration 13 | g01518454 |
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| Illustration 14 | g01518473 |
- Remove balancer weights (31). Ensure that the gear of the driven weight does not damage bushing (32) in the balancer frame.
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| Illustration 15 | g01526793 |
- Check bushing (32) and bushing (33) for wear. Refer to Specifications, "Gear Group (Front)" for the correct tolerances.
- If the bushing is worn or damaged use Tooling (C) to remove the bushing.
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| Illustration 16 | g01521644 |
- Check needle bearings (20) and (21) for damage.
- If the needle bearings are worn or damaged use Tooling (C) to remove the needle bearings.
Note: Parts that are worn or damaged must be replaced.
