631-2398 camshaft housing CAT 707 dump truck spare part

Advantages

• Supports proper interaction between camshaft and valve components.
• Allows lubrication flow to camshaft contact areas.
• Resistant to oil and chemical exposure for enhanced longevity.

1. Strict coaxiality of bearing bores, keep journals aligned and reduce eccentric wear
2. Built-in oil galleries with stable oil supply to avoid dry friction
3. Precision ground sealing surface, good gasket fit and low oil leakage risk
4. Integrated casting with unified locating datum, convenient for camshaft assembly installation

FAQ 

Q1：Can lightly scored housing bore be reused after grinding?
A：Not recommended. Roundness will be lost, leading to abnormal bearing clearance and seizure.
Q2：Do we need to inspect housing when only replacing camshaft and bearings?
A：Yes. Worn housing bore is a common cause of early camshaft failure.
Q3：What failure will blocked oil gallery cause?
A：Poor lubrication for camshaft and thrust plate, rapid wear, noise and shaft seizure.
Q4：Is there a proper bolt tightening sequence?
A：Tighten diagonally from center outward in multiple stages to prevent housing warping.