Parts for your 1985 Suzuki Jimny-Cv joint

1985 Suzuki Jimny CV joint – what it is, and how to look after it

Yes, a CV joint is used on the 1985 Suzuki Jimny. The front axle uses Birfield-type constant velocity joints housed inside the steering knuckles. This is documented in the Suzuki SJ413/Samurai Factory Service Manual (Front Axle/Steering Knuckle section, mid‑1980s editions), the Haynes Suzuki SJ410/SJ413/Samurai manual (1981–1998), and Suzuki parts catalogues that list the front axle “Birfield/joint set”. These sources make it clear the Jimny’s front live axle relies on CV (Birfield) joints, even though it isn’t independent suspension.

On a 1985 Jimny, the CV joint’s job is to transfer drive to the front wheels at varying steering angles without vibration, keeping power delivery smooth on and off road. Unlike many front‑wheel‑drive cars with exposed rubber CV boots, the Jimny’s Birfields live inside the swivel/knuckle housing, bathing in grease and protected by knuckle seals. They only see action when the hubs are locked and 4WD is engaged, but off‑road loads can still be pretty hefty, so looking after them is worth it.

As part of regular servicing, it pays to check the front knuckles for grease seepage, torn or perished knuckle wiper seals, and any wobble or roughness when the wheel is spun by hand. If there’s clicking or popping while turning under load in 4WD, metallic paste in the knuckle grease, or vibration that changes with steering angle, the Birfield CVs could be on the way out. The factory literature notes servicing the swivel/knuckle assembly as a unit: that means fresh grease, new seals and felts, and inspection of the Birfield heads, kingpin bearings and wheel bearings.

• Use a quality molybdenum disulphide (moly) CV grease when rebuilding the knuckles.
• Replace knuckle wiper seals and felts if there’s any weeping, keeping water and grit out dramatically extends CV life.
• If the Birfield shows pitting, cracking or blueing, replace it—don’t try to nurse a damaged joint.
• Aftermarket chromoly Birfields are a solid upgrade for hard off‑roaders, OE‑style joints are fine for touring and daily use.

Replacing a worn CV on a Jimny typically involves stripping the free‑wheeling hub, brakes and wheel bearings, removing the axle shaft/Birfield from the housing, then rebuilding the knuckle with a seal kit before refitting. A patient home mechanic with the right tools and a workshop manual can handle it, but a specialist 4x4 workshop will do it quicker and set preloads correctly. Done properly, the front CVs will run quietly for heaps of kilometres, happy to take on beach runs, bush tracks and weekend towing without complaint.

Popular questions

How do you tell if a 1985 Jimny’s CV (Birfield) is worn?
Typical signs are clicking or knocking when turning in 4WD under throttle, harsh vibration that changes with steering lock, and metallic glitter in the knuckle grease. Severe wear can also feel like a notchiness through the steering when loaded off‑road. If any of these show up, plan a knuckle service and inspection.

Does the 1985 Jimny have CV boots?
Not in the usual FWD sense. The Birfield CV sits inside the swivel/steering knuckle and is protected by the knuckle housing and wiper seals. Instead of rubber outer boots, keep those knuckle seals and felts in good nick to stop water and grit from contaminating the CV grease.

What grease should be used in the Jimny’s Birfield CVs?
Use a high‑quality molybdenum disulphide (moly) CV joint grease. Pack the Birfield and knuckle as specified in the service manual and avoid mixing grease types. Fresh grease and clean internals go a long way to quiet, long‑lived CVs.