KIT- 4398620 - Caterpillar

EngineG3508 (S/N: N8B1-UP; 9TG1-UP; WPN1-UP)Introduction
The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.Problem
The current upgrade kit includes a limiting regulator, which can cause speed instability.Solution
Remove the limiting regulator and hose that connects the wastegate to the air cleaner housing. Install new bracket, connectors, and adapters as specified in the rework procedure.Required Parts
Table 1
Qty Part Number Part Name
1 2N-1287 Adapter-Elbow 90 Deg (37 Deg)
1 8L-6557 Adapter-Straight (37 Deg to NPTF)
1 5M-6214 Plug-NPTF
1 3J-7355 Adapter-Straight
1 353-7956 Grommet
1 038-3967 Bracket
1 0S-1594 Bolt
2 1A-2029 Bolt
3 5M-2894 Washer-Hard
1 9S-8752 Nut-Ful Removal Procedure
Illustration 1 g06183429
(1) 520-9522 Hose As, 8L-6557 Connector, 521-0622 Adapter, and 2N-8142 Swivel Tee
(2) 434-4947 Regulator, 434-4954 Bracket, 3B-1915 Bolt, and 5M-2894 Hard Washer
(3) Hose Clamp, Bolt, and Washer
Due to instability remove the limiting regulator and hose assembly that runs from the wastegate to the air filter housing.Installation Procedure
Illustration 2 g06183512
(1) 5M-6214 Plug
(2) 8L-6557 Connector, and 7K-9197 Elbow
(3) 1A-2029 Bolt, and 5M-2894 Hard Washer
Plug the now open port in the air inlet housing with plug (1).
Connect hose assembly to wastegate reference port with elbow and adapter (2).
Install new bolt and washer (3).
Illustration 3 g06183523
(4) 3J-7355 Flared Union
(5) 1A-2029 Bolt, 5M-2894 Hard Washer, and 9S-8752 Full Nut
(6) 0S-1594 Bolt
(7) 038-3967 Bracket, 3B-1915 Bolt, and 5M-2894 Hard Washer
Connect both hoses originally going to regulator with straight adapter (4).
Install bracket 50 degrees using reused bolt and washer (7).
Secure hose to aftercooler with hose clamp, bolt, washer, and nut (5).
Fill open hole with bolt (6).