Frequently Asked Questions About Hino 238-338 Truck Steering Parts & Acc.

What model years are compatible with Hino 238 and 338 steering parts?

Most aftermarket steering components for Hino 238 and 338 trucks are designed to fit models from 2005 through 2019. However, there were minor changes in 2011 and 2016 that may affect compatibility with certain parts like steering boxes and column assemblies. Always verify your specific VIN and production date when ordering power steering pumps, gear boxes, or steering shafts, as Hino used different suppliers during these production years.

How difficult is it to replace the power steering pump on a Hino 338?

Replacing the power steering pump typically takes 2-3 hours for an experienced mechanic. The main challenges include limited access space near the engine compartment and the need to properly bleed the system afterward. You'll need basic hand tools, a pulley puller for the pump, and approximately 2 quarts of power steering fluid. The most common mistake is not properly tensioning the belt after installation, which can cause premature pump failure.

What are the signs my Hino steering gear box needs replacement?

Common indicators include excessive play in the steering wheel (more than 2 inches of movement before the wheels respond), fluid leaks around the gear box seals, grinding or clicking noises when turning, and uneven tire wear. If you notice wandering or the need for constant steering corrections on straight roads, have the gear box inspected immediately. Most Hino steering boxes last 200,000-300,000 miles with proper maintenance.

Are aftermarket steering parts as reliable as OEM for Hino trucks?

Quality aftermarket steering components from established manufacturers can match OEM specifications and often cost 30-50% less. Look for parts that meet or exceed SAE standards and come with at least a 12-month warranty. Critical components like tie rod ends and drag links should always be heavy-duty grade with greaseable joints. Avoid economy-grade steering parts on commercial vehicles as the cost savings rarely justify the shorter lifespan.

What steering fluid should I use in my Hino 238 or 338?

Hino specifies ATF (Automatic Transmission Fluid) Dexron III or Dexron VI for the power steering system, not traditional power steering fluid. Using the wrong fluid can damage seals and cause system failure. The system holds approximately 1.5 quarts total, but you'll need extra for bleeding procedures. Change the fluid every 50,000 miles or 2 years to prevent contamination that can damage the pump and steering gear box.