394-1399 Caterpillar main engine camshaft for engine spare part

394-1399 Caterpillar main engine camshaft for engine spare part Featured Image
  • 394-1399 Caterpillar main engine camshaft for engine spare part
  • 394-1399 Caterpillar main engine camshaft for engine spare part

Short Description:

394-1399 Caterpillar main engine camshaft, fits C4.4 diesel engine, controls intake and exhaust valve timing, widely used on 420F, 430F backhoe loaders, compact excavators and agricultural machinery.


Product Detail

Product Tags

description

The 394-1399 is one-piece camshaft for C4.4 inline four-cylinder engine. It drives roller lifters to regulate valve events. This compact electronic engine powers backhoe loaders and small construction machines with frequent start-stop cycles. Lobe pitting, spalling or journal scoring causes rough idle, weak power and high fuel consumption. Severe damage leads to valve interference and valve train breakdown. It is supplied without timing gear, allowing reuse of serviceable original gear for cost-effective overhaul.

Part No.：394-1399
Name：Main Engine Camshaft (without gear)
Fit Models：CAT C4.4
Weight (lb): 9.15
Equipment：420F, 430F backhoe loader, compact excavator, agricultural equipment
Material：Forged alloy steel with induction hardened cam lobes
Matching Components：Roller lifters, cam bearings, timing gear, thrust washer

Maintenance & Replacement Tips

1. Inspect all roller lifters and cam bearings during replacement. Replace scored or over-worn parts
2. Clean cylinder head galleries and camshaft oil passages thoroughly. Fine contaminants easily scratch lobe surfaces
3. Follow C4.4 service manual strictly for timing alignment. Misalignment causes valve-to-piston contact
4. Pre-lube before cranking. Check idle stability and listen for timing gear noise during test run

FAQ 

1. Does 394-1399 fit C4.2 engine?
No. C4.2 and C4.4 differ in cam lift, journal size and mounting dimension, non-interchangeable.

2. Can original gear with light tooth pitting stay in service?
Pitting is fatigue damage and spreads fast under frequent cycling. Careful inspection is required.

3. Can the camshaft stay in service with scattered shallow pitting and no crack?
Light isolated pits can be monitored temporarily. Replace it if pitting spreads or spalling occurs to protect lifters.

4. What risk if I install new camshaft and reuse old lifters?
Mismatched contact surfaces will trigger rapid lobe pitting and spalling during break-in and lead to early failure.

our warehouse

our warehouse

Pack and ship

Pack and ship


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

    Products categories