What is the tightening sequence and torque for the cylinder head?

Tighten the cylinder head bolts in stages of 30Nm (22 lbf.ft.), 90Nm (66 lbf.ft.), and 130Nm (95 lbf.ft.).

When should the cylinder head bolts 838775 be replaced?

The cylinder head bolts should be replaced when there are signs of elongation, or if elongation cannot be confirmed by checking the waist of the bolt. To replace all the cylinder head bolts 838775, 27 pcs are required. Poseidon Marine offers Recmar® Head bolt for Volvo Penta D30 D40 D31 D41 D300 838775.

What is the tightening torque for vital joints?

Main bearing caps: 180Nm (130.2 ft.lbs) or 140Nm (101.2 ft.lbs). The low value applies for engines up to no. 2201 and following, and the high value applies for engines no. 31816 and following. Big-end bearings: 113Nm (81.7 ft.lbs).

What is the piston ring profile and its part number? How to install them?

Each piston has two compression rings and one oil ring. The upper compression ring (A) has a keystone shape and is molybdenum-coated. The second compression ring (B) is chrome-coated. The oil scraper ring (C) should be installed with the opening of the expander opposite the gap in the oil ring. The piston rings’ reference is 275350.

Engine overhaul kit for Volvo Penta 40A 40B 40C 875722 876971

€3.199,90

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High-quality marine engine spare parts.

PoseidonMarine® Engine rebuilt kit for Volvo Penta marine diesel:

MD40A, TMD40A, TMD40B, TMD40C
AQD40A, AQAD40A
AQAD40B, TAMD40A, TAMD40B

STD size bearings are included

The following parts are included in this kit:

Big end bearing kit: 876511 (6)
Main bearing kit: 876515 (6)
Thrust bearing kit: 876523 (1)
Piston kit & liner: 875722 (6) (SLP® brand)
Gasket kit upper and lower: 876349 (1) & 3582596 (1)

Engine overhaul kit for Volvo Penta 40A 40B 40C 875722 876971

This product replaces the following manufacturer's part nr:

Volvo Penta: 876971
SLP: ERK-971
PoseidonMarine order number: PM876971

Assembly time: 4 days.

The references that are listed here are trademarks that apply to the respective trademark owners. The references are used only for a reference purpose. Our product is compatible with these reference numbers. Please note that our product is an aftermarket product (non-OEM), unless otherwise stated.

ESTIMATED DELIVERY TIME

Workshop manual for Volvo Penta TAMD31A, AQAD31A, and TMD31A. For further technical details, you may download this workshop manual

Frequently Asked Questions About Volvo Penta MD40A, AQAD40A, AQAD40B, TAMD40B, TMD40B, and TMD40C

What is the tightening sequence and torque for the cylinder head?

Tighten the cylinder head bolts in stages of:
• 30Nm (22 lbf.ft.)
• 90Nm (66 lbf.ft.)
• 130Nm (95 lbf.ft.)
When should the cylinder head bolts 838775 be replaced?

The cylinder head bolts should be replaced when there are signs of elongation, or if elongation cannot be confirmed by checking the "waist" of the bolt. To replace all the cylinder head bolts 838775, 27 pcs are required.

Poseidon Marine offers Recmar® Head bolt for Volvo Penta D30 D40 D31 D41 D300 838775.
What is the tightening torque for vital joints?

• Main bearing caps: 180Nm (130.2 ft.lbs) or 140Nm (101.2 ft.lbs).
The low value applies for engines up to no. 2201 and following.
The high value applies for engines no. 31816 and following.

• Big-end bearings: 113Nm (81.7 ft.lbs).
What is the piston ring profile and its part number? How to install them?

Each piston has two compression rings and one oil ring:
• Upper compression ring (A): Keystone shape, molybdenum-coated.
• Second compression ring (B): Chrome-coated.
• Oil scraper ring (C): Install with the opening of the expander opposite the gap in the oil ring.

The piston rings’ reference is 275350.