Parts for your 1998 Daihatsu Gran move-Oil seals

1998 Daihatsu Gran Move oil seals — what they do and when to replace them

Oil seals are absolutely relevant and fitted to the 1998 Daihatsu Gran Move (G300-series, also known as Pyzar). Technical references including the Daihatsu G300 Series Workshop Manual (Engine Mechanical and Manual Transmission/Transaxle sections) and the Daihatsu Electronic Parts Catalogue (models G301/G303) list front and rear crankshaft oil seals, camshaft oil seal(s), and transaxle/differential drive shaft oil seals for this model. Industry data sources used across Australia and New Zealand, such as Autodata service information, also identify inspection of these seals for leaks during routine servicing.

On this tidy little MPV, oil seals do the quiet, messy work of keeping lubricants where they belong while shafts spin at engine and road speeds. At the front of the engine, the crankshaft seal keeps oil behind the timing cover and pulley area. At the back, the rear main seal holds oil in at the flywheel/torque converter. Camshaft seals protect the top end near the timing belt, and the transaxle’s drive shaft/output seals keep gearbox oil inside the diff where the CVs plug in. If any of these start weeping, oil gets onto belts, clutches, or the driveway — none of which is ideal.

Because access overlaps with other jobs, smart maintenance on a 1998 Gran Move is about timing. Many workshops will replace the front crank and cam seals during a timing belt service, and the rear main when the clutch is out. Drive shaft seals are commonly done when a CV shaft is removed or if there’s fresh oil misting around the inner CVs. This approach saves double labour and helps keep the engine and transaxle clean and happy.

• Tell-tale signs: oil spots under the front or mid-car, a wet crank pulley area, oil tracking from the bellhousing, or gearbox oil around inner CV joints.
• Consequences of delay: oil on the timing belt (shortens belt life), slipping or contaminated clutch, low engine or gearbox oil levels.
• Good practice: use quality seals, inspect the shaft surface for grooves, lightly lube the seal lip on install, and torque fasteners to spec from the workshop manual.

There’s no fixed replacement interval for oil seals — they’re changed on condition or opportunistically during related work. For a Gran Move that’s now well into classic territory, asking for a seal check at each service and planning proactive replacement during timing belt, clutch, or CV work is a cost-effective way to avoid drips and bigger headaches.

Popular question: Which oil seals are on a 1998 Daihatsu Gran Move?

Common ones are the front crankshaft seal, rear main (crank) seal, camshaft seal(s), and the transaxle/differential drive shaft output seals. Valve stem seals also exist inside the cylinder head, but they’re a different job and not external service items.

Popular question: How often should Gran Move oil seals be replaced?

They’re replaced on condition rather than by a strict interval. Many owners choose to renew the front crank and cam seals during the timing belt service, the rear main with a clutch job, and the drive shaft seals when a CV shaft is out or if there’s visible leakage.

Popular question: What are the signs an oil seal is leaking on this model?

Look for fresh oil around the crank pulley or timing cover, oil at the bellhousing join, or gearbox oil around the inner CVs. You might notice oil drops under the car, a burning-oil smell, or accelerated timing belt grime. Low engine or gearbox oil levels can also point to a leak.