1 666 046 M92

Tube Assembly, PS (5)

Name: Tube Assembly, PS (5) — OEM 1 666 046 M92
Brand: Massey Ferguson
SKU: 1 666 046 M92

MF 290steering

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OEM Number: 1 666 046 M92
Part Name: Tube Assembly, PS (5)
Qty per Tractor: 1
Assembly: STEERING BOX PARTS
System: steering
Notes: Power steering tube assembly. Source: Jensales MF 290 Parts Book (form 651 475 M91) page 22. needs_verification=true.

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Used on

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

Fastener / Measurement	Value
Power steering pump body bolts torque 30 ft-lbs evenly. Parker-Hannifin or Sundstrand pumps.	41 N-m
Power steering pump mounting cap screws torque 20 ft-lbs.	27 N-m
Power steering relief valve setting (early) 1500-1600 psi. Maximum should not exceed 11375 kPa (1650 psi).	10345–11030 kPa

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

Power steering — lubrication and bleeding

Bleed by cycling steering side-to-side after pump install. Hydraulic fluid recommended per operator's manual.

every 250 hr

Power steering pump R&R (Parker-Hannifin or Sundstrand)

Body bolts 41 N-m, mounting screws 27 N-m. Outer housing scribe-mark alignment is required.

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