Caterpillar 6D16 Diesel Engine Pre Disassebly Inspection

This instruction show you guide on how to disassemble and inspect Caterpillar 6D16 diesel engine.


Procedures:
(1) Piston projection from crankcase top surface
NOTE

The piston projections affect engine performance and must therefore be checked.
WARNING
The cylinder liners may rise out of position when the crankcase is turned over or the crankshaft is turned. Hold their flanges down using bolts and washers A.
Caterpillar 317-7485
• Measure the projection of each piston at two points and calculate the average of the two values.
A: Front of engine https://www.car-auto-repair.com
• If the average value is out of specification, check the clearances between all relevant parts.

(2) Connecting rod end play
• Measure the end play of every connecting rod.
• If any measurement exceeds the specified limit, replace the defective part(s).

(3) Cylinder liner flange projection
• If any measurement is out of specification, replace the defective part(s).
B: Flange projection

CAUTION
If the cylinder liner 6 flange projection is insufficient, bearing pressure on the cylinder head gasket will be too low in the region of the bore, possibly causing gas to leak.

Connecting rod bearings
[Installation]
Install the connecting rod bearings 2, 4 by fitting the lugs A into their respective grooves.
CAUTION
The upper connecting rod bearing has an oil hole B. The lower connecting rod bearing has no oil hole. Take care not to confuse the upper and lower parts.
Caterpillar ET 2022
[Inspection]
CAUTION
• Do not attempt to manually expand a connecting rod bearings
2, 4 if its span is insufficient.
• Upper and lower connecting rod bearings 2, 4 must be replaced as a set.
(1) Span when free
If the span is less than the specified requirement, replace the upper and lower connecting rod bearings 2, 4 as a set.
(2) Connecting rod bearing-to-crankshaft pin clearance
If the connecting rod bearing-to-crankshaft pin clearance exceeds the specified limit, replace the defective part(s).

CAT SIS 2021

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