20R-1138 camshaft for CAT engine spare part

20R-1138 camshaft for CAT engine spare part Featured Image
  • 20R-1138 camshaft for CAT engine spare part
  • 20R-1138 camshaft for CAT engine spare part

Short Description:

Remanufactured camshaft for Caterpillar C13 engine, inspected and rebuilt to OEM specification, drives hydraulic tappet valve train and controls intake and exhaust valve timing, overhaul replacement for 345D, 349D excavators and 735 mining trucks.

Product Detail

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description

This camshaft is a Caterpillar reman unit for C13 electronic engine. Different from brand-new forged camshafts, it uses qualified core with journal grinding, surface coating reinforcement, precision polishing and full functional inspection. Cam lobes actuate hydraulic tappets and rocker assemblies to regulate valve lift and timing, matching C13 ECU fuel map for mining and heavy earthmoving equipment.

It adopts forged steel core. Cam and journal surfaces are reinforced by special reman coating, achieving OEM hardness for good pitting and spalling resistance under cyclic heavy shock loads. Journals and cam profiles follow original OEM geometry, with runout and phase inspection before delivery.

This is a remanufactured unit without timing gear, the matching gear must be ordered separately. It differs in manufacturing process from 10R-series new C13 camshafts. Do not assume direct interchange between new and reman versions; verify engine serial number before ordering.

Part Number: 20R-1138
Name: Remanufactured camshaft
Applicable Models: Caterpillar C13 engine; 345D, 349D excavator, 735 articulated truck, 16M motor grader
Material: Forged steel core with reman wear-resistant coating
Type: Reman unit, timing gear not included
Function: Drive valve train and control valve timing

Product Advantages

1. OEM reman process with reinforced cam coating, cost-effective solution for heavy mining replacement
2. Cam lift and timing phase follow original C13 calibration, ensures stable air flow and less derate
3. Rechecked journal coaxiality and cleaned oil passages for smooth lubrication and lower scoring risk
4. Multi-inspection including pressure, runout and phase check, more reliable than simple rebuilt cores and reduces downtime

FAQ 

Q: What faults happen if the reman coating peels or wears?
A: Reduced valve lift, poor air flow, power loss and higher fuel consumption with valve train noise, engine derate in severe cases.

Q: Can 20R-1138 directly replace a brand-new C13 camshaft?
A: Interchangeable for some serial ranges, but the core process is different. Confirm engine serial number instead of matching by machine model only.

Q: C13 uses hydraulic tappets. Do I need repeated valve lash adjustment for this reman camshaft?
A: Hydraulic tappets self-compensate clearance. No manual lash adjustment is needed, focus on timing and noise check after break-in.

Q: What risk if I reuse old bearings while replacing this camshaft?
A: Worn out-of-round bearings create abnormal clearance and abrade the cam coating rapidly, leading to premature failure of the reman unit.

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