374-2276 CAT D10T2 Ripper Lift Cylinder Aftermarket Replacement

Product Overview

SEIGO’s aftermarket ripper lift cylinder, part number 374-2276, is a direct drop-in replacement for the left-hand ripper lift cylinder on the Caterpillar D10T2 track-type tractor — one of Caterpillar’s large mining and quarry dozers, powered by the C27 engine. Caterpillar catalogues this part as Cylinder Gp-Ripper, Lift, LH, with a 210 mm (8.3 in) bore and a 535 mm (21.1 in) stroke. It is fitted to machines with serial prefixes TFD, TFP, TFR and TFY, across both the multishank and single-shank ripper arrangements.

The ripper lift cylinders raise and lower the ripper assembly at the rear of the dozer, driving the shank into the ground and lifting it clear. The D10T2 uses a pair of lift cylinders — the right-hand cylinder is 374-2277 — and both share the same 210 mm bore and 535 mm stroke. On a mining dozer, ripping is among the highest-load operations the machine performs: fracturing rock and hardpan that cannot be dozed directly, with the full tractive effort of the machine driving the shank through the material. The lift cylinders carry this load on every ripping pass.

The ripper lift cylinder should not be confused with the ripper tilt cylinder 374-2285 (180 mm bore, 660 mm stroke, field-replaced by 521-2571), which adjusts shank angle, nor with the dual tilt cylinders at the front of the machine (374-2279 and related, 235 mm bore) that operate the blade. Each is a different part with different dimensions and is not interchangeable.

SEIGO manufactures the 374-2276 to full Caterpillar dimensional specification: a 42CrMo4 induction-hardened, hard-chrome-plated piston rod finished for the abrasion and impact of the ripping environment, an ST52 seamless honed steel barrel machined to the 210 mm bore, and a genuine NOK (Japan) or Parker (USA) seal kit with a heavy-duty wiper for high contamination. Each unit weighs approximately 258 kg, is pressure tested at 1.5× rated working pressure before shipment from our Guangdong factory, and is backed by a 12-month or 2,000 operating-hour warranty. Standard lead time is approximately 30 days ex-works, with expedited production available for machine downtime.

Product Specifications

* OEM part numbers, brand names and model designations are used for identification and cross-reference purposes only. SEIGO Machinery is an independent aftermarket manufacturer and is not affiliated with Caterpillar Inc.

Cat D10T2 Ripper Cylinder Cross-Reference

The D10T2 ripper uses paired lift cylinders (LH and RH) plus a tilt cylinder. All are catalogued under the ripper cylinder group. Part 374-2276 is the left-hand lift cylinder.

The lift cylinders (374-2276 LH, 374-2277 RH) raise and lower the ripper; the tilt cylinder (374-2285 / 521-2571) adjusts shank angle. They are different parts with different dimensions. These fit both multishank (378-3286 / 416-7690) and single-shank (378-3287 / 416-7689 / 521-3701) ripper arrangements. Confirm your machine serial number before ordering.

Cat D10 Series — Ripper Lift vs Blade Cylinder Reference

The D10T2 uses different cylinders for the rear ripper and the front blade. Ordering the wrong group is a common error — both include “lift” and “tilt” functions but at opposite ends of the machine.

The ripper cylinders (rear) and blade tilt cylinders (front) are not interchangeable. They have different bore and stroke dimensions and mount at opposite ends of the machine. 374-2276 is a rear ripper lift cylinder. SEIGO supplies ripper and blade cylinders for the D10T2 — send us your machine serial number and the position you need to confirm the correct part.

Why This Cylinder, Specifically

• Correct hand and function, verified. The D10T2 ripper uses a left-hand (374-2276) and a right-hand (374-2277) lift cylinder, plus a separate tilt cylinder. And the ripper cylinders are distinct from the front blade cylinders. We confirm the exact position against your serial number before quoting, because the wrong hand or the wrong end of the machine means the mounting will not line up.
• Manufactured to Cat dimensional spec. 210 mm (8.3 in) bore and 535 mm (21.1 in) stroke, built to reproduce the original ripping force and stroke exactly — no change to ripper penetration or lift.
• Built for the ripping duty cycle. Ripping subjects the lift cylinders to sustained high load and shock as the shank fractures rock. We dimension the rod for this and finish the chrome for impact and abrasion resistance, because rod scoring and wiper failure from contamination are the leading failure initiators in the ripping environment.
• Replace lift cylinders as a pair. Both ripper lift cylinders share identical operating hours. If the LH cylinder has failed or is scored, the RH (374-2277) is usually close behind. We supply matched LH/RH pairs on a single order to keep ripper lift balanced and avoid a second shutdown.
• Rods, barrels and seal kits supplied separately. For workshops rebuilding in-house, we supply the piston rod, honed barrel, cylinder head, piston and seal kit as individual items — typically 40–60% of the cost of a complete cylinder. Send us your machine serial number and the component you need.
• Full traceability and testing. ISO 9001:2015 manufacturing, 100% pressure tested at 1.5× rated working pressure, shipped in an ISPM-15 fumigated export crate with material certificate and test record.

FAQ

Q1: Is 374-2276 the left-hand or right-hand ripper lift cylinder?

A: 374-2276 is the left-hand (LH) ripper lift cylinder for the Cat D10T2, catalogued by Caterpillar as Cylinder Gp-Ripper, Lift, LH. The right-hand cylinder is 374-2277. Both have a 210 mm bore and 535 mm stroke, but the porting and mounting differ between sides, so the hand must be correct. Confirm which side you need before ordering.

Q2: What is the difference between the ripper lift cylinder and the ripper tilt cylinder?

A: The lift cylinders (374-2276 LH, 374-2277 RH) raise and lower the ripper assembly and have a 210 mm bore with a 535 mm stroke. The tilt cylinder (374-2285, field-replaced by 521-2571) adjusts the shank angle and has a smaller 180 mm bore with a longer 660 mm stroke. They are different parts and not interchangeable. SEIGO supplies both — specify lift or tilt when you enquire.

Q3: Does 374-2276 fit both multishank and single-shank rippers?

A: Yes. Caterpillar lists 374-2276 as the lift cylinder for both the multishank ripper arrangements (378-3286, 416-7690) and the single-shank arrangements (378-3287, 416-7689, 521-3701) on the D10T2. It applies to machines with cylinder serial prefixes TFD, TFP, TFR and TFY. Confirm your machine serial number before ordering.

Q4: Is this the same as the blade tilt cylinder on the front of the machine?

A: No. 374-2276 is a rear ripper lift cylinder. The front blade uses dual tilt cylinders (374-2279, 521-8392, 521-8393) with a different 235 mm bore and 241 mm stroke. The ripper and blade cylinders mount at opposite ends of the machine and are not interchangeable. When ordering, always specify whether you need a ripper cylinder or a blade cylinder.

Q5: Can I buy the rod, barrel or seal kit separately instead of a complete cylinder?

A: Yes. SEIGO manufactures the piston rod, honed barrel, cylinder head, piston and seal kit as individual items and supplies them to hydraulic repair shops and rebuild facilities. For workshops with in-house honing and assembly capability, sub-component supply typically runs 40–60% of the cost of a complete replacement cylinder. On ripper lift cylinders, rod and wiper-seal replacement is the most common single-item order. Send us your machine serial number and the component you need for a quotation.

Q6: What is the lead time and how does it ship?

A: Standard production lead time is approximately 30 days ex-works Guangdong, China, with expedited production available for machine downtime. At approximately 258 kg, each cylinder ships in an ISPM-15 fumigated wooden export crate, FOB Shenzhen, CIF or DDP. Sea freight is standard for planned replacements; air freight is available for urgent situations.

SEIGO Machinery is an independent aftermarket manufacturer. All OEM part numbers, brand names and machine model designations are used for identification and cross-reference purposes only. These aftermarket components are not manufactured by, endorsed by, or affiliated with Caterpillar Inc.