2008/09/08 Caterpillar

Landfill Compactor:

836G (S/N: BRL1-UP; 7MZ1-UP)

836H (S/N: BXD1-UP)

Wheel Dozer:

834G (S/N: BPC1-UP)

834H (S/N: BTX1-UP)

844 (S/N: BBN1-UP)

844H (S/N: BTW1-UP)

854G (S/N: AMP1-UP; A4W1-UP; 1JW1-UP)

Wheel Loader:

988G (S/N: BNH1-UP)

988H (S/N: BXY1-UP)

990Series II (S/N: BCR1-UP)

990H (S/N: BWX1-UP)

992G (S/N: AZX1-UP; ADZ1-UP)

Service Magazine, SEPD0921, 31 December 2007, "A New Main Steering Control Valve Is Now Used on Large Wheel Loaders and Large Wheel Dozers with the Standard and Secondary Steering". The information in this article has changed. Disregard this article. See the replacement article that follows.

ReferenceDisassembly and Assembly, RENR2173, "988G Wheel Loader", "Steering Control Valve - Remove"

ReferenceDisassembly and Assembly, RENR2173, "988G Wheel Loader", "Steering Control Valve - Install"

ReferenceDisassembly and Assembly, RENR6222, "988H Wheel Loader", "Steering Control Valve - Remove"

ReferenceDisassembly and Assembly, RENR6222, "988H Wheel Loader", "Steering Control Valve - Install"

ReferenceDisassembly and Assembly, RENR6266, "990 Series II Wheel Loader", "Steering Control Valve - Remove"

ReferenceDisassembly and Assembly, RENR6266, "990 Series II Wheel Loader ", "Steering Control Valve - Install"

ReferenceDisassembly and Assembly, RENR8826, "990H Wheel Loader", "Steering Control Valve - Remove"

ReferenceDisassembly and Assembly, RENR8826, "990H Wheel Loader", "Steering Control Valve - Install"

ReferenceDisassembly and Assembly, SENR5893, "992G Wheel Loader", "Steering Control Valve - Remove"

ReferenceDisassembly and Assembly, SENR5893, "992G Wheel Loader", "Steering Control Valve - Install"

ReferenceDisassembly and Assembly, RENR2193, "834G and 836G Wheel Dozer", "Steering Control Valve - Remove"

ReferenceDisassembly and Assembly, RENR2193, "834G and 836G Wheel Dozer", "Steering Control Valve - Install"

ReferenceDisassembly and Assembly, RENR6224, "834H and 836H Wheel Dozer", "Steering Control Valve - Remove"

ReferenceDisassembly and Assembly, RENR6224, "834H and 836H Wheel Dozer", "Steering Control Valve - Install"

ReferenceDisassembly and Assembly, RENR6279, "844 Wheel Dozer", "Steering Control Valve - Remove"

ReferenceDisassembly and Assembly, RENR6279, "844 Wheel Dozer", "Steering Control Valve - Install"

ReferenceDisassembly and Assembly, RENR8839, "844H Wheel Dozer", "Steering Control Valve - Remove"

ReferenceDisassembly and Assembly, RENR8839, "844H Wheel Dozer", "Steering Control Valve - Install"

ReferenceDisassembly and Assembly, RENR2129, "854G Wheel Dozer", "Steering Control Valve - Remove"

ReferenceDisassembly and Assembly, RENR2129, " Wheel Dozer", "Steering Control Valve - Install"

Description of Change: The main steering control valve has been redesigned. The new main steering control valve has enhanced reliability and accuracy.

Adaptable To: Refer to Table 1 and Table 2 for information concerning the new main steering control valve. The new main steering control valve is effective with Wheel Loaders and Wheel Dozers that are listed in Table 1 and Table 2. The main steering control valves are adaptable to all production machines prior to machines that are listed in Table 1 and Table 2.

Table 1

Wheel Loaders
Sales Model	Effectivity	Steering Configuration	Former Part Number	New Part Number
988G	S/N:BNH1632-UP	Standard	133-8608	301-4599
988G	S/N:BNH1632-UP	Secondary	133-8609	301-4602
988G	S/N:2TW660-UP	Standard	133-8608	301-4599
988G	S/N:2TW660-UP	Secondary	133-8609	301-4602
988H	S/N:BXY2061-UP	Standard	133-8608	301-4599
988H	S/N:BXY2061-UP	Secondary	133-8609	301-4602
990 Series II	S/N:BCR322-UP	Standard	6E-2925	301-4605
990 Series II	S/N:BCR322-UP	Secondary	6E-2923	301-4608
990 Series II	S/N:4FR642-UP	Standard	6E-2925	301-4605
990 Series II	S/N:4FR322-UP	Secondary	6E-2923	301-4608
990H	S/N:BWX398-UP	Standard	6E-2925	301-4605
990H	S/N:BWX398-UP	Secondary	6E-2923	301-4608
992G	S/N:AZX764-UP	Standard	126-1357	301-4614
992G	S/N:AZX764-UP	Secondary	112-4597	301-4616
992G	S/N:ADZ624-UP	Standard	126-1357	301-4614
992G	S/N:ADZ624-UP	Secondary	112-4597	301-4616
992G	S/N:ADZ624-UP	Secondary	112-4597	301-4616
992G	S/N:7HR388-UP	Standard	126-1357	301-4614
992G	S/N:7HR388-UP	Secondary	112-4597	301-4616

Table 2

Wheel Dozers, Landfill Compactors
Sales Model	Effectivity	Steering Configuration	Former Part Number	New Part Number
834G	S/N:BPC206-UP	Standard	149-0392	306-9397
834G	S/N:BPC206-UP	Secondary	150-4087	306-9399
834G	S/N:6GZ220-UP	Standard	149-0392	306-9397
834G	S/N:6GZ220-UP	Secondary	150-4087	306-9399
834H	S/N:BTX317-UP	Standard	149-0392	306-9397
834H	S/N:BTX317-UP	Secondary	150-4087	306-9399
836G	S/N:BRL536-UP	Standard	149-0392	306-9397
836G	S/N:7MZ75002-UP	Standard	149-0392	306-9397
836H	S/N:BXD611-UP	Standard	149-0392	306-9397
844	S/N:2KZ411-UP	Secondary	6E-2923	301-4608
844	S/N:BBN146-UP	Secondary	6E-2923	301-4608
844H	S/N:BTW172-UP	Secondary	6E-2923	301-4608
854G	S/N:A4W373-UP	Secondary	112-4597	301-4616
854G	S/N:AMP356-UP	Secondary	112-4597	301-4616
854G	S/N:1JW78002-UP	Secondary	112-4597	301-4616