John Deere — Install Cylinder Liner in Block
Repair & overhaul
From a John Deere service manual covering: 4045, 4045TF120, 6068, 6068 HF485, 6068HF158, 6068TF120, 6068TF250, 6068TFM50, 6068TFM76. Check it applies to your exact model before use.
Applies to: John Deere 4045, John Deere 4045TF120, John Deere 6068, John Deere 6068 HF485, John Deere 6068TF120, John Deere 6068TF250, John Deere 6068TFM50, John Deere 6068TFM76
Before you start
- Install liners into same cylinder bore as removed
- Do not intermix piston/liner sets on the same engine
- If a packing may have sheared, remove and examine liner and packing
Procedure
- Install liner in block bore with mark toward front of engine.
- Rotate liner 90° from removed position if OD is pitted or eroded.
- Finish seating liner using cylinder liner puller.
- Hold liners with large flat washers and cap screws, snug only.
- Clean liner bores with waterless hand cleaner and wipe dry.
- Apply clean engine oil to liner bores to prevent corrosion.
Tools required
- KCD10001 or JDG1145 Cylinder Liner Puller Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Liner height above block 0.030—0.100 mm (0.001—0.004 in.)
Full service-parts list: John Deere 4045 →, John Deere 6068 →, John Deere 6068 HF485 →, John Deere 6068TF250 →, John Deere 6068TFM50 →, John Deere 6068TFM76 →
Source: John Deere 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.