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IRONREFERENCE

376 138 X1

Seal (3/16 x 3/8 x 3/32, Diesel)

MF 290engine

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Supersession History

Part Details

OEM Number
376 138 X1
Part Name
Seal (3/16 x 3/8 x 3/32, Diesel)
Qty per Tractor
1
System
engine
Notes
Engine seal. Source: Jensales MF 290 Parts Book (form 651 475 M91) page 19. needs_verification=true.

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Related

Specs & Torques

Factory specs for the engine on the MF 290from a service manual covering this part's assembly.

Fastener / MeasurementValue
Valve clearance, intake (hot), A4.236 diesel
Cold spec 0.30 mm. MF 255/265/270/275/290 diesel.
0.25 mm
Valve clearance, exhaust (hot), A4.236 diesel
Cold spec 0.30 mm.
0.25 mm
Valve face angle (diesel)
All Perkins diesel engines.
45 °
Valve seat angle (diesel)
45 °
Low idle speed (all)
725–775 rpm
High idle no-load (diesel)
2185 rpm
Rated full-load speed
2000 rpm
Crankshaft main journal diameter (AG4.212/A4.236/AG4.236)
2.9985-2.9990 in. AD4.203 spec is 69.81-69.82 mm.
76.162–76.175 mm
Main bearing clearance (A4.236)
0.05–0.10 mm
Crankpin diameter (AG4.212/A4.236/AG4.236)
2.4990-2.4995 in.
63.475–63.487 mm
Crankpin bearing clearance
AG4.212/A4.236/AG4.236 — 0.064-0.102 mm for AD4.203.
0.038–0.076 mm
Crankshaft end play
0.10-0.38 mm for A4.236.
0.05–0.38 mm
Full MF 290 torque reference →

Service Procedures

R&R and adjustment procedures for the engine on the MF 290.

Engine R&R — A4.236/A4.248 diesel (paragraph 75)

Tractor split required. Drain coolant + oil. Disconnect injection lines + harness.

Cylinder head reseal — diesel

Step-torque head bolts: 8 N-m → 16 N-m → 33 N-m. New head gasket. Valve clearance after warmup.

Connecting rod bearing replacement

Rod cap screws 100-108 N-m (74-80 ft-lbs). Bearing clearance 0.038-0.076 mm.

Main bearing service

Cap bolts 235 N-m (175 ft-lbs). Crank end play 0.05-0.38 mm.

Engine balancer R&R

Mounting cap screws 95 N-m (70 ft-lbs). Pressure-fed oil through balancer frame.

All MF 290 service procedures →

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Data last verified April 2026. Sources: Massey Ferguson parts books, manufacturer catalogs, community submissions.