Parts for your 1986 Mitsubishi Pajero-Centre bearing

1986 Mitsubishi Pajero centre-bearing: what’s fitted and what to service

Based on technical literature for the first‑generation Pajero (L040 series), a centre (carrier) bearing is used on 1986 long‑wheelbase (5‑door) models with a two‑piece rear propeller shaft, while short‑wheelbase (3‑door) models use a single‑piece shaft and do not have a centre bearing. This configuration is shown in the Mitsubishi Pajero/Montero Factory Service Manual (1982–1991, Group: Propeller Shaft/Driveline), the Mitsubishi ASA electronic parts catalogue for L040 variants, and general repair guides such as Gregory’s Service and Repair Manual No. 518 for Mitsubishi Pajero 1983–1996.

Where it’s not used (3‑door SWB): the rear shaft is short enough to run as a single piece without intermediate support. Deleting the centre bearing reduces parts count, weight and NVH complexity, while maintaining acceptable critical speed and driveline angles for the shorter wheelbase.

Where it is fitted (5‑door LWB): the centre bearing supports the two‑piece tailshaft at mid‑span, keeping alignment true, managing driveline angles, and soaking up vibration through its rubber isolator. In day‑to‑day driving it helps the Pajero feel smoother on take‑off and at highway speeds, especially under load or when towing. Over time, the rubber cushion can crack or separate, and the bearing itself can rumble. Typical clues are a low drone or hum on acceleration, a shudder when loading or lifting off the throttle, and visible sag or cracking around the carrier. If the bearing is on the way out, it can accelerate wear in the universal joints and flog out the carrier bracket hardware.

Servicing tips owners appreciate:

• Inspect at each service or before big trips: look for torn rubber, off‑centre shaft position, or rusty dust around the bearing.
• If removing the tailshaft, paint‑mark the flanges and yokes to keep the original phasing and balance when refitting.
• Check the carrier bracket bushes and fasteners, replace any crushed or perished mounts.
• When replacing the centre bearing, many techs press a complete carrier/bearing assembly rather than just the inner bearing to avoid damaging the new seal or misaligning the rubber.
• After installation, set the carrier height/shims so the rear shaft runs true with correct driveline angles, then road‑test for NVH and re‑torque fasteners. Refer to the Mitsubishi factory manual for model‑specific torque values and angle checks.

Pairing a fresh centre bearing with new U‑joints (if worn) and properly balanced shafts restores that tidy, quiet driveline feel these L040s are known for in Aussie and Kiwi conditions.

Popular questions

Does a 3‑door 1986 Pajero have a centre bearing?
No. The short‑wheelbase 3‑door runs a single‑piece rear propeller shaft, so there’s no centre (carrier) bearing. Its shorter tailshaft length means it doesn’t need mid‑shaft support.

What are the common symptoms of a worn centre bearing on a 5‑door 1986 Pajero?
Owners usually notice a low hum or rumble on take‑off, a shudder when getting on and off the throttle, or a droning vibration at certain speeds. A quick visual check often shows a sagging carrier or cracked rubber isolator.

Can a keen DIYer replace the centre bearing at home?
Yes, with stands, a press (or access to one), and care marking the tailshaft phasing. It’s a straightforward job on stands, but pressing the bearing on/off and setting carrier height are the tricky bits. If in doubt, a driveline shop can swap and balance the shaft quickly.