Where this bearing fits in an engine rebuild
Part 612600030020 is listed as a Weichai connecting-rod bearing. It works at the rod-to-crankshaft journal interface; correct selection depends on the actual crankpin and engine specification, not the number alone.
Before choosing a bearing
Record engine model and serial from the nameplate.
Read the number and any grade or size marks on the removed shell.
Measure the crankpin at several positions and check taper, ovality and surface condition.
Use the prescribed method to verify assembled oil clearance.
Assembly checks that matter
Keep shells, rod housing and journal clean. Confirm the locating tang and oil-hole alignment, then follow the engine manual for fastener procedure and clearance limits. A similar-looking shell may still have a different grade or geometry.
Related overhaul reference
Review the Weichai liner measurement guide separately; liner selection does not identify rod-bearing size.
FAQ
Does 612600030020 determine required clearance?
No. Confirm the applicable engine specification and measure the assembled journal clearance.
Can another shell compensate for a worn crankpin?
Do not assume so. Measure and assess the crankshaft using service limits.
What should I send for a fitment check?
Provide the nameplate, old-shell markings and crankpin measurements.
Compatibility: Verify engine serial, bearing grade and measured crankpin dimensions.
