438-6135 rear camshaft CAT engine spare part

Short Description:

Part No.438-6135, caterpillar rear camshaft for heavy mining engine, receives timing torque from front camshaft, controls valve and fuel timing for rear cylinders, matched with 438-6132, shaft only without gear.


Product Detail

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description

This 438-6135 rear camshaft is forged from high-purity alloy steel. Its cam profile is tuned for rear cylinders to improve fuel atomization and exhaust scavenging under uphill load. It has integrated thrust shoulder and connects to front camshaft via coupling flange. Timing gear and spacers are not included. It solves high exhaust temperature, weak power and abnormal noise on rear bank. It must be paired with front 438-6132 and cannot swap with marine or gas engine camshafts.

Part No.:438-6135
Name:Rear Camshaft
Material:Carbon Steel
Process:Integral forging, carburizing quenching, segmented precision grinding, cam profile inspection
Package:Camshaft only, gear, thrust washer and spacer sold separately
Application:Cat large mining truck engine, open-pit heavy haul power unit

Advantages

1. Rear-bank cam profile with extended exhaust duration, helping control rear cylinder exhaust temperature under heavy load
2. Integrated thrust shoulder, less axial shift caused by worn thrust washers
3. Uniform hardened journal surface, good resistance to uneven wear under alternating torque
4. Split layout, replace only rear segment instead of full timing assembly to cut spare cost
5. Cam lift, concentricity and flange runout checked individually, convenient for separate stocking

FAQ 

Q:Can 438-6135 rear camshaft replace 438-6132 assembly directly?
A:Not interchangeable. Different mounting and timing design will cause binding and valve collision.

Q:Can the camshaft be reused after light journal scratches polished?
A:It can be used temporarily within tolerance. Deep grooves require replacement to avoid seizure.

Q:How to store this rear camshaft?
A:Rest horizontally on multi-point supports, coat cams and journals with anti-rust grease and cover with dust shield.

Q:Is oil and filter change recommended after installation?
A:Recommended, to prevent hard particles from scratching new cam lobes.

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