Caterpillar — Track Detensioning - Mechanical Spring & Nitrogen Charge
Maintenance · Tension cylinder
From a Caterpillar service manual covering: Challenger 65, Challenger 70, Challenger 75, Challenger 85, Challenger 95. Check it applies to your exact model before use.
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Before you start
- If the breather is plugged, air/oil pressure may exist; unscrew slowly to bleed pressure.
- Applies to Challenger C Series, D Series, E Series.
Procedure
- Remove the 2 tension cylinder breather guard bolts (LH and RH) using a 9/16 inch socket.
- Slowly loosen and remove the 2 breathers using a 1 3/8 inch open end wrench.
- Install the correct adapter in the breather location.
- Install the detensioning hose onto the RH tension cylinder adapter.
- Install the T fitting into the LH tension cylinder and attach the crossover hose quick connect.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: Caterpillar service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.