BOLT-SOCKET HEAD 8T8441 - Caterpillar

Articulated Truck: 725 (S/N: WWA1-UP; B1L1-UP; AFX1-UP) 730 (S/N: WWB1-UP; AGF1-UP) 730 EJECTOR (S/N: B1M1-UP; B1W1-UP) 735 (S/N: WWC1-UP; B1N1-UP; AWR1-UP) 735B (S/N: L4D1-UP; T4P1-UP; E4R1-UP) 740 (S/N: WWD1-UP; AXM1-UP; B1P1-UP; DTX1-UP; AZZ1-UP) 740 EJECTOR (S/N: B1R1-UP) 740B (S/N: L4E1-UP; GLH1-UP; T4R1-UP; E4S1-UP) 740B EJECTOR (S/N: L4F1-UP; T4S1-UP) D250E Series II (S/N: 4PS1-UP) D250E (S/N: 5TN1-UP) D300E Series II (S/N: 5KS1-UP) D300E (S/N: 7FN1-UP) D350E Series II (S/N: 2XW1-UP) D400E Series II (S/N: APF1-UP; 8PS1-UP)Cold Planer: PR-1000C (S/N: 5XC1-UP) PR-750B (S/N: 8AC1-UP) PR-750C (S/N: 7CK1-UP)Engine: 3126 (S/N: 9ZR1-UP) 3516 (S/N: 29Z1-UP)Excavator: 5130B (S/N: 4CS1-UP) 5230 (S/N: 7LL1-UP) 5230B (S/N: 4HZ1-UP)Off-Highway Truck/Tractor: 784B (S/N: 5RK1-UP) 785 (S/N: 8GB1-UP) 785B (S/N: 6HK1-UP) 785C (S/N: 1HW1-UP; APX1-UP; 5AZ1-UP; AP21-UP) 785D (S/N: DMC1-UP; MSY1-UP) 789 (S/N: 9ZC1-UP) OEM POWERTRAIN (S/N: DTE1-UP)Pipelayer: PL83 (S/N: DLW1-UP; CB21-UP) PL87 (S/N: TEC1-UP; ZAC1-UP)Track-Type Tractor: D11R (S/N: AAF1-UP; 8ZR1-UP; 9TR1-UP; 9XR1-UP; 7PZ1-UP) D11T (S/N: GEB1-UP; TPB1-UP; DDD1-UP; RAL1-UP)Wheel Dozer: 844 (S/N: 2KZ1-UP)Wheel Loader: 990 Series II (S/N: 4FR1-UP) 990 (S/N: 7HK1-UP)Wheel Tractor-Scraper: 621F (S/N: 4SK1-UP) 621G (S/N: DBB1-UP; DXB1-UP; MSE1-UP; KLK1-UP; NEL1-UP; CEN1-UP; ALP1-UP; CEP1-UP; KJW1-UP; DBX1-UP; MEX1-UP) 621H (S/N: DBK1-UP) 623G (S/N: DBC1-UP; CES1-UP; ARW1-UP; CEW1-UP; DBY1-UP) 623H (S/N: DBF1-UP) 627G (S/N: DBD1-UP; AXF1-UP; CEX1-UP; CEZ1-UP; DBZ1-UP) 627H (S/N: DBW1-UP) 631E (S/N: 1AB1-UP) 631G (S/N: DFA1-UP; DXE1-UP; AWK1-UP; DEM1-UP; CLR1-UP; CMT1-UP; M1W1-UP) 637E (S/N: 1FB1-UP) 637G (S/N: CEH1-UP; CEJ1-UP; DFJ1-UP; AXT1-UP; DEX1-UP)Introduction
Table 1
Revision     Summary of Changes in REHS3583    
00     New document.    © 2015 Caterpillar All Rights Reserved. This guideline is for the use of Cat dealers only. Unauthorized use of this document or the proprietary processes therein without permission may be violation of intellectual property law. Information contained in this document is considered Caterpillar: Confidential Yellow.This special instruction includes test procedures for piston pumps. This Special Instruction also provides specifications. The technician should have a good understanding of hydraulic piston pumps. The technician should be educated in the operation of the hydraulic test bench. The test benches in this document are available through the Caterpillar Dealer Service Tools. Gather all necessary tooling before you need to hook up the pump. Some of the required tooling appears in a table at the end of this document. There are many possible variations of tooling that could be used. Not every possible variation can be listed.For questions or additional information concerning this guideline, submit a feedback for in the Service Information System website. In Order to address an urgent need, please use the following to relay your request to Caterpillar Repair Process Engineering.
Cat Dealer Technical Communicator
Dealer Solution Network
Cat Technical Representative
Knowledge Network (on-line)Canceled Part Numbers and Replaced Part Numbers
This document may not include all Canceled part numbers and replaced part numbers. Use NPR on SIS for information about Canceled part numbers and replaced part numbers. NPR will provide the current part numbers for replaced parts.Safety
Illustration 1 g02139237
Personal injury or death can result from improperly checking for a leak.Always use a board or cardboard when checking for a leak. Escaping air or fluid under pressure, even a