203-6090 sleeve bearing for CAT C9/C9.3 engine spare part

203-6090 sleeve bearing for CAT C9/C9.3 engine spare part Featured Image
  • 203-6090 sleeve bearing for CAT C9/C9.3 engine spare part
  • 203-6090 sleeve bearing for CAT C9/C9.3 engine spare part

Short Description:

Steel-backed aluminum camshaft sleeve bearing for rear end of Caterpillar C9 / C9.3 engine, outer diameter 70.10 mm, supports camshaft rear journal with oil film, maintains alignment and stabilizes valve timing.

Product Detail

Product Tags

description

This sleeve bearing adopts steel-backed aluminum bimetallic structure with precision-honed bore and built-in oil groove. It is installed at the rearmost camshaft bore of cylinder head and works with other cam bearings to keep coaxiality. Bore expansion, alloy spalling, clogged oil groove and bushing creep will lead to camshaft runout, incorrect valve timing, abnormal noise and poor power. Contamination causes galling and seizure, damaging cylinder head.

Part No.:203-6090
Type: Steel-backed aluminum sleeve bearing (rear camshaft bushing)
Outer Diameter:70.10 mm
Width:19 mm
Height (in): 1.2
Length (in): 2.9
Material: Steel-backed aluminum bearing
Process: Turning, heat treatment, bore honing
Compatible Fluid: Engine lube oil
Working Condition: High temperature and high-speed cyclic load inside cylinder head
Matching System: Engine camshaft valve train assembly

Application Scenarios

Fits Caterpillar C9, C9.3 diesel engines for 330C,330D,336D,340D excavators, road machines and generator sets, for overhaul of rear camshaft bearing position. Matching cam bearings:203-5805,216-5586.

FAQ 

Q：Can bearing with minor scratch on alloy layer be reused?
A：Not recommended. Scratch breaks oil film and leads to rapid spalling.

Q：Can only this rear bushing be replaced while others remain old?
A：Not recommended. Coaxiality is matched, mixed parts cause offset wear.

Q：What risk if oil groove is misaligned after pressing?
A：No lubrication on contact surface, dry friction causes galling and seizure quickly.

Q：Does noisy valve train mean this rear bushing defective?
A：Check valve clearance, tappet wear and oil pressure first.

our warehouse

our warehouse

Pack and ship

Pack and ship


  • Previous:
  • Next:
    • Write your message here and send it to us

    Products categories