JCB Skid Steer Loader 190T

Obtained the correct service parts

Main bearing caps removed if pistons and connecting rods have not been removed

Clean off all traces of the old sealant compound from the crankcase and bedplate mating faces

Use a suitable degreasing agent to carefully clean the main bearing saddles in the bedplate and crankcase

Ensure all necessary tools, bolts etc. are readily available prior to assembling the components

Ensure that the upper main bearing shells are flush with the bottom face of the crankcase

Ensure that all items are clean and free from damage and corrosion

Use a suitable degreasing agent to clean both sides of the lower bearing shells

Install the lower bearing shells into the bedplate

This procedure requires service parts. Make sure you have obtained the correct service parts before you start, refer to Parts Catalogue.

Engine is safe to work on and cooled down if it has been running

Check the main bearing surfaces for damage and excessive wear

Measure the crankshaft diameters to confirm they are within service limits

Check that the oilway cross drillings in the crankshaft are clear and free from debris

Check that the piston cooling oil sprayers are clear (if installed)

If the sprayers cannot be cleared, were the fixing screws removed?

Were the sprayers removed and discarded?

Assemble the shaft in the crankcase

Measure the axial shift of the crankshaft with a dial gauge

Does the axial shift range between 0.18-0.38mm (0.007-0.015in)?

If the value is more than or less than the specified range, replace the shoulder rings?