Caterpillar Skid Steer Loader 257B3

1. Remove the filler plug for the right side drive chain case. The oil level should be at the bottom of the threads on the fill port. If necessary, refer to Operation and Maintenance Manual, “Drive Chain Case Oil - Change” for the proper procedure to add oil.

2. Apply 169-5464 Quick Cure Primer and 5P-3413 Pipe Sealant to the threads on the filler plug. Install the filler plug.

3. Repeat the process for the left side drive chain case.

Drive Chain Tension - Check/Adjust

Note: Steel tracks that go over the tires should only be used with pneumatic tires. When you use steel tracks that go over tires or any drive train device except tires, the interval for checking the drive chains should be reduced to every 100 Service Hours. The use of rubber tracks that go over the tires is not recommended.

Note: There are four drive chains on the skid steer loader that must be checked and adjusted.

1. Park the machine on level ground and stable ground.

Refer to the Service Manual for the complete adjustment procedure for the engine valve lash.

A qualified mechanic should adjust the engine valve lash and the fuel injector timing because special tools and training are required.

See your Cat dealer for this service.

Ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product.

Collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.

Dispose of all fluids according to local regulations and mandates.

The normal oil change interval for the machine is Every 500 Service Hours or every year when the following conditions are met:

Conditions for normal oil change interval

An oil change interval of Every 250 Service Hours or every six months is required when the following conditions occur:

Conditions for 250 Service Hours oil change interval

An oil change interval of Every 125 Service Hours is required when the following condition occurs:

Position one final drive so that the oil fill/drain plug is at the bottom

Remove the oil plugs and allow the oil to drain into a suitable container

Check the drained oil for large metal chips or a significant number of metal particles

Clean the plugs and inspect the plugs. Replace a worn plug or a damaged plug

Position the final drive so that the oil fill/drain plug is at the top

Add oil through the opening of the oil fill/drain plug that is now at the top

Fill the final drive to the bottom of the opening for the oil check plug

Install the two oil plugs. Tighten the oil plugs to a torque of 27 ± 1 N·m (20 ± 0.7 lb ft)

Steps to inspect the air conditioner belt

Sign off on the Skid Steer Loader Maintenance