1677368 Valve Adjusting Shim for Volvo NH12
1300 05 040
Summary
This 3.95 mm valve adjusting shim is designed for Volvo NH12 engines with the D12C engine code. It serves as a precision-ground component within the engine valve train to maintain exact valve clearance under heavy-duty operating conditions. Equivalent to OE Volvo 1677368.
| EAN Code | 8699031053592 |
|---|
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Compatible OEM Codes
-
VOLVO
- 1677368
Description
What is a valve adjusting shim?
A valve adjusting shim is a precision-ground steel spacer that brings valve clearance in heavy commercial vehicle diesel engines to the tolerance set by the manufacturer. This component sits between the rocker arm, valve bridge, or cam follower and the valve, ensuring the valve seats fully on every cycle.Vehicle and engine compatibility
This specific shim is compatible with Volvo NH12 trucks equipped with D12C engines. It is essential for maintaining the precise timing and compression within the cylinder head assembly of these heavy commercial vehicles.Installation and maintenance guidance
To ensure proper fitment, technicians should measure each valve individually and clean the shim seat thoroughly before installation. It is recommended to lightly oil the shim during assembly to prevent scoring on the first start-up. Always verify clearances after fitting to ensure they meet manufacturer specifications.Selection and fitment importance
Correct shim selection prevents compression loss and protects the valve seating face from premature wear due to incorrect lash.OE cross-reference
1300 05 040 (Valve Adjusting Shim Engine Valve) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 1677368.Other OEMs
VOLVO
- 1677368
Related Products
Grouped Products
Used In
Compatible Vehicles
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| RENAULT TRUCKS | Magnum | DXi12 | |
| VOLVO | |||
| VOLVO | FH12 | D12C | |
| VOLVO | FH12 | D12D | |
| VOLVO | FH16 | D16C | |
| VOLVO | FM10 | D10A | |
| VOLVO | FM12 | D12C | |
| VOLVO | FM12 | D12D | |
| VOLVO | NH12 | D12C | |
| VOLVO | VHD | D12 | |
| VOLVO | VNL | D12 |
FAQ
What is the function of a valve adjusting shim?
A valve adjusting shim is used to bring the valve clearance in diesel engines back to the exact manufacturer-specified tolerance by adding precise thickness to the valve train.
Which vehicles are these shims compatible with?
These shims are specifically designed for Volvo NH12 vehicles featuring the D12C engine. Always verify compatibility via the OE reference of the removed part.
How should I install a new valve adjusting shim?
Clean the shim seat thoroughly and apply a light layer of oil before assembly. Always re-measure clearances after installation but before closing the engine cover.
What happens if the wrong thickness shim is used?
Using an incorrect thickness can lead to improper valve seating, resulting in compression loss, increased noise, or accelerated wear of the valve train components.
What are the OE reference numbers of this part?
1300 05 040 directly replaces Volvo OE number 1677368.