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| Illustration 1 | g00407220 |
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| Illustration 2 | g00407222 |
Note: For instruction on reusability, refer to Guideline For Reusable Parts, SEBF8022, "Sealed And Lubricated Track".
Maximum track press assembly force ... 710 kN (160000 lb)
(1) Apply 4C-5592 Anti-Seize Compound to the threads and the washer face of each bolt that holds the half links together.
- Torque for these bolts ... 340 ± 70 N·m (250 ± 50 lb ft)
Tighten the bolts by an additional 180° turn.
(2) Apply SAE 30W oil to the bolt threads and the washer faces that hold the track shoes to links.
- Torque for these bolts ... 340 ± 70 N·m (250 ± 50 lb ft)
Tighten the bolts by an additional 120° turn.
Note: Install the nuts so that the radii on the corner of the nut are against the link.
(3) Original height (grouser) for extreme utilization ... 71.5 mm (2.81 inch)
- Original height (grouser) for moderate utilization ... 70.0 mm (2.76 inch)
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Height of 100 percent worn grouser
- Operations under little shock load or no shock load ... 25.4 mm (1.00 inch)
- Operations under average or heavy shock load ... 38.1 mm (1.50 inch)
(4) Height of an unused link ... 131.5 mm (5.18 inch)
Height of 100 percent worn link ... 121.5 mm (4.78 inch)
(5) Distance from the center of one pin to the center of the next pin (pitch) ... 215.9 mm (8.500 inch)
(6) Distance from the face of the link to the end of the bushing ... 1.80 ± 0.13 mm (0.071 ± 0.005 inch)
(7) Maximum permissible end clearance (end play) ... 0.20 mm (0.008 inch)
(8) Thickness of an unused thrust ring ... 10.70 ± 0.08 mm (0.421 ± 0.003 inch)
(9) Extension of pin at each end for power shift machines and for direct drive machines ... 4.9 ± 0.8 mm (0.193 ± 0.032 inch)
(10) Bushings
- Diameter of an unused bushing ... 79.2 mm (3.12 inch)
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The minimum diameter of the bushing before the bushing is turned.
- Operations under little shock load or no shock load ... 69.1 mm (2.72 inch)
- Operations under average or heavy shock load ... 71.6 mm (2.82 inch)
Track Guide Guard
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| Illustration 3 | g00446223 |
(11) Torque for eight bolts ... 750 ± 80 N·m (550 ± 60 lb ft)
(12) Torque for eight nuts ... 300 ± 40 N·m (220 ± 30 lb ft)
Track Adjustment
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To prevent personal injury, never visually inspect the vent holes or the valves to see if grease or oil is coming out of them. Make sure the vent holes are clean before the tension is released on the track. Watch the front roller frame to see that it moves. |
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| Illustration 4 | g00411200 |
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| Illustration 5 | g00411203 |
Note: Adjust the track under the operating conditions that exist on the job site. Packing must NOT be removed from the track if packing conditions exist on the job site.
- Move the machine forward for two times the length of the machine. Allow the machine to come to a stop without using the brakes. Move the machine forward slightly with the blade in the FLOAT position in order to ensure that the excess slack remains in the track between the rear idler and the sprocket.
- Put a tight cord over the grousers. Put the cord from the top of the sprocket to the top of the front idler.
- Measure distance (B) in two places. Measure distance from the front idler to the carrier roller. Measure distance from the carrier roller to the sprocket. Average the two measurements. Machines without a carrier roller require only one measurement.
- Add multipurpose grease (MPG) through the filler valve. Add grease until the idler moves toward the front of the machine, and the track is tight.
- Measure dimension (A) .
- Open the relief valve by one turn in order to allow the idler to move back 13 mm (0.5 inch). Move the machine forward and backward. Moving the machine will help the idler move back.
- Close the relief valve.
(A) Dimension with an unused undercarriage (approximate measurement) ... 40 mm (1.57 inch)
(A) Dimension at the maximum adjustment (approximate measurement) ... 105 mm (4.1 inch)
Note: Turn the track pins and bushings or install unused track link assemblies when track adjustment reaches the maximum.
Note: Wear lengthens the track to the maximum length. The piston has a machined flat. The flat vents the grease pressure. This vent prevents the over-pressurization of the cylinder.