TK488CR/CRH Diesel Engine

Important Many engine components are not interchangeable between the different engine models. See the appropriate parts manual or the EPC (Electronic Parts Catalog) to identify the correct service parts.

These units use new engines called the TK488CR/CR1 and TK488CRH/CRH1. The TK488CRH/CRH1 is the high output version and runs at higher speeds. CR stands for Common Rail fuel injection system, which used electronically controlled fuel injectors to reduce emissions. An Exhaust Gas Recirculation (EGR) system and Diesel Oxidation Catalyst (DOC) exhaust after-treatment system also reduce emissions so the engine is EPA Tier 4 compliant. An Engine Control Unit (ECU) monitors and controls engine operation. The unit controller indirectly monitors and controls the engine through the ECU.

Other than the fuel system, EGR, and DOC, the TK488CR/ CR1/CRH/CRH1 engine is mechanically similar to the TK486. The bore of the TK488CR/CR1/CRH/CRH1 is 88 mm versus 86 mm for the TK486, so the displacement for the TK488CR/CR1/CRH/CRH1 is 2.2 liters versus 2.1 liters for the TK486.

TK488CR/CRH

In this section:

  1. TK488CR/CRH Engine Service
Parent topic: Engine Maintenance