Checking Tires

NOTE: Tires exposed to sunlight, ozone, or electrical discharge will eventually develop cracks. If these cracks extend to the cord body, the tire should be replaced.

Protect tires from exposure to petroleum products, and chemicals.

Drive carefully. Try to avoid rocks and sharp objects.

IMPORTANT: Tighten wheel bolts to specification every 10 hours until torque stabilizes.

Repeat the following procedure on drive wheel cap screws after 1 hour and 1 day of operation each time they are loosened.

1. Tighten drive wheel cap screws to specification.

Specification

Drive Wheel Cap Screws -Lubricated Torque 610 N·m  (450 lb-ft)

N75318


A-Drive Wheel Cap Screws

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2. Tighten power rear axle wheel cap screws (A) to specification.

Specification

Power Rear Axle Wheel Cap Screws -Lubricated Torque 610 N·m  (450 lb-ft)

3. Tighten power rear wheel center disk to waffle rim cap screws (B) to specification.

Specification

Power Rear Wheel Center Disk to Waffle Rim Cap Screws -Dry Torque 332 N·m (245 lb-ft)

Check tires daily for damage or noticeably low pressure.

    Visually inspect all tires daily. Consider replacing tire if following conditions exist:

  • Worn tread
  • Unusual or spotty tread wear
  • Isolated bulges or bubbles in tread or sidewall
  • Torn or missing drive lugs
  • Deep cracks or cuts in tread or sidewall that extend to the cord body
  • If the tire repeatedly loses more than 20% of its rated pressure without explanation, and repair does not eliminate repeated pressure loss

IMPORTANT: Maintain correct tire pressure to prevent damage to tires. Verify tires are inflated to specifications.

At least every 100 hours of operation, check tire pressure.

Tire Size Inflation Pressure
Dual Drive Tires 520/85R42 (R1, R2) 248 kPa
(2.5 bar)
(38 psi)
Power Rear Axle Steering Tires 520/85R34 (R1, R2) 324 kPa
(3.2 bar)
(47 psi)

 
N75310


A-Rear Axle Wheel Cap Screws
B-Center Disk To Waffle Rim Cap Screws

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