Doosan DH55 4JB1 Rebuild Kit for Daewoo Solar 55 and DX60

Description

Doosan DH55 4JB1 Rebuild Kit: Rebuild the Isuzu Engine in Your Daewoo Solar 55, DH55 or DX60

A compact Doosan that will not start stops the job. This Doosan DH55 4JB1 rebuild kit supplies pistons, cylinder liners, bearings, valves and a complete gasket set for the 2.8-litre, four-cylinder Isuzu 4JB1 diesel in Daewoo Solar 55, Doosan DH55 and Doosan DX60 excavators, and in Isuzu NHR and NKR trucks. Pick your bearing size, piston style and pin diameter, then order today.

Kit Contents

Everything for the core rebuild comes in one kit:

• 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)
• Rod bushings (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)

The cylinder liners are semi-finished, so your machine shop finishes them to suit your block. Pistons, rings, pins and snap rings are standard size. The block, crankshaft and cylinder head are not included.

Key Features

• Specific to the 4JB1. The kit carries cross-reference numbers including 5-87311-082-0, 8-94247-861-2 and 8-94332-326-0, so you can check old parts against it.
• Three options that matter. Choose the bearing size, the piston combustion chamber (square bottom or round bottom) and the piston pin diameter (34 mm or 31 mm) before checkout.
• The whole wear set in one box. Pistons, rings, pins, snap rings and rod bushings pair with main bearings, rod bearings and thrust washers, while valves, guides and seats cover the head.
• Fixes what you can hear and see. Smoke, rising oil use, hard starting and a machine that bogs down under load usually trace back to worn rings, liners and bearings. Renewing them together addresses the cause.

Compatibility

This Doosan DH55 4JB1 rebuild kit fits the Isuzu 4JB1 and 4JB1T engines. The excavators listed are the Daewoo Solar 55, Doosan DH55 and Doosan DX60, and the Isuzu NHR and NKR trucks. Confirm the engine code on your nameplate before ordering.

The same 4JB1 kit is also used in Bobcat loaders: see our Isuzu 4JB1 rebuild kit. Looking at another compact excavator engine? Our Isuzu 3KC1 rebuild kit covers Hitachi mini excavators, and every kit is in the Isuzu rebuild kits category.

Why Choose This Doosan DH55 4JB1 Rebuild Kit

Doosan owners choose this Doosan DH55 4JB1 rebuild kit because it keeps the repair simple:

• Back to work sooner. The wear parts arrive together, so the rebuild is not held up by missing items.
• Cheaper than a new engine. Renewing the wear parts keeps an excavator you already own earning.
• Check before you buy. The listed cross-reference numbers and the option choices reduce the risk of a wrong order.
• Help on request. Send your engine serial number or old-piston photos and we will help you pick the right options. Isuzu engine information is at Isuzu Diesel Engines.

FAQs

Which machines use the Doosan DH55 4JB1 rebuild kit?

The listed machines are the Daewoo Solar 55, Doosan DH55 and Doosan DX60 excavators and the Isuzu NHR and NKR trucks, with the Isuzu 4JB1 or 4JB1T engine.

How do I choose the piston pin diameter?

The kit comes with a 34 mm or a 31 mm piston pin diameter. Measure the pin in your old piston, or send us a photo, before you choose.

What does square bottom or round bottom mean?

It describes the shape of the combustion chamber in the piston crown. Compare your old pistons with both options before ordering.

What is not included?

The engine block, crankshaft and cylinder head are not part of the kit.

Get your Doosan digging again. Select your bearing size, combustion chamber and pin diameter, then add the Doosan DH55 4JB1 rebuild kit to your cart. Unsure? Send us your engine serial number before you order.