Isuzu 3LB1 Rebuild Kit for Sumitomo SH25J, SH28J, SH30JX

Description

Isuzu 3LB1 Rebuild Kit: Restore Power in Your Sumitomo SH25J, SH28J or SH30JX

Compact excavators earn their keep on tight jobs, so a tired engine hurts. This Isuzu 3LB1 rebuild kit brings together pistons, cylinder liners, bearings, valves and a complete gasket set for the three-cylinder Isuzu 3LB1 diesel in Sumitomo SH25J, SH28J and SH30JX excavators. Choose your bearing sizes below and order today.

Kit Contents

The kit arrives as one set with these 12 parts:

• Complete gasket set for the rebuild
• Cylinder liners, semi-finished (one set)
• Pistons, standard size (one set)
• Piston pins (one set)
• Snap rings (one set)
• Piston ring sets, standard size
• Main bearings (one set)
• Connecting rod bearings (one set)
• Thrust washers (one set)
• Intake and exhaust valves (one set)
• Valve guides (one set)
• Intake and exhaust valve seats (one set)

This kit does not include rod bushings, so check the small-end bushings separately during teardown. The cylinder liners are semi-finished and need machining. The block, crankshaft and cylinder head are not included.

Key Features

• Made for three cylinders. Pistons, rings and liners are supplied for the Isuzu 3LB1, so you are not forcing parts from a different engine.
• Bottom and top end together. Pistons, rings, pins and snap rings sit alongside main bearings, rod bearings and thrust washers, while valves, guides and seats cover the cylinder head.
• Bearing choices. Main and connecting rod bearings are offered in Standard, +0.25 mm and +0.5 mm.
• Simple ordering. Make two selections at checkout and the kit is in your cart.
• Fixes what you can hear and see. Hard starting, smoke, oil consumption and weak power under load usually trace back to worn rings, liners and bearings. Renewing them together addresses the cause instead of chasing symptoms one part at a time.

Compatibility

This Isuzu 3LB1 rebuild kit fits the Isuzu 3LB1 engine in the Sumitomo SH25J, SH28J and SH30JX excavators. Check the engine code on your nameplate to confirm.

Working on another compact machine? See our Isuzu 3KC1 rebuild kit for Hitachi mini excavators, or browse every Isuzu rebuild kit.

Before you order, read the model and serial number from the engine nameplate, then compare the bearing size options with your crankshaft measurements. If anything is unclear, send us a photo of the nameplate and we will help you confirm the kit.

Why Choose This Isuzu 3LB1 Rebuild Kit

Here is why owners of compact Sumitomo machines pick this Isuzu 3LB1 rebuild kit:

• Right-sized for the machine. A kit written for the 3LB1 means no guessing about cylinder count or part sizes.
• One order, one delivery. The wear parts arrive together so the rebuild keeps moving.
• An economical repair. Rebuilding keeps a compact excavator earning without the cost of a replacement machine.
• Fitment help. Send us your engine serial number if you want a second opinion. Isuzu engine support information is at Isuzu Diesel Engines.

FAQs

Which Sumitomo models use the Isuzu 3LB1 rebuild kit?

The listed models are the Sumitomo SH25J, SH28J and SH30JX, all with the Isuzu 3LB1 engine.

Does the kit include rod bushings?

No. This kit contains 12 parts and rod bushings are not among them.

How do I choose my bearing size?

Measure the crankshaft journals. A crank that has never been ground normally takes Standard bearings. A ground crank needs the matching +0.25 mm or +0.5 mm size.

Is the engine block or crankshaft included?

No. The block, crankshaft and cylinder head are not included in the kit.

Keep your excavator working. Select your main and connecting rod bearing sizes and add the Isuzu 3LB1 rebuild kit to your cart today. Questions about fitment? Send us your engine serial number before you order.