Usage:
793 (3SJ) Trucks
Description of Change: A new valve group is used to provide stable hoist cylinder movement when raising the body. Two new 1014845 Plugs (orifices) were added to the valve group and a third 1014845 Plug was added between the tank passage and stem bore to bleed off any pressure when the truck is not being operated.
Adaptable To: The 6E6318 Control Valve Group is in effect with 793 Trucks (3SJ47). The former 9T8922 Valve Group has been canceled. Earlier trucks can be updated by installing a new valve or by modifying the former valve.
Installing a new 6E6318 Control Valve on 793 Trucks (3SJ1-46).
Illustration 1. Location of the former 9T8922 Valve Group. Location of the 2A6473 Hose Assembly (1).
Illustration 2. View E-E. Location of the 2A6473 Hose Assembly (1) on the former 9T8922 Valve Group.
1. Remove and discard the 2A6473 Hose Assembly (1), 3E7435 Adapter (2) and 6V9200 Elbow (3) used with the former control valve group.
Illustration 3. New 6E6318 Control Valve Group. Over-center Valve (4). Mounting plate (5). 1014845 Plug (6). 1013326 Screen Assembly (7). 1014845 Plug (8). Bypass port (A). Large tank port (B). Small tank port (C).
2. Remove the former 9T8922 Control Valve Group and install the new 6E6318 Control Valve Group.
3. Replace the 6V9161 Tee (9) with a 6V9200 Elbow. Connect the existing 2A6474 Hose Assembly (10) to 6V9200 Elbow. See Illustration 2.
Modifying a former 9T8922 Control Valve Group.
1. Install a 1007010 Pin in drilled passage (B).
2. Remove the 3E7435 Adapter (shown in Illustration 2) and install an 8T6659 Adapter.
Illustration 4. 9T8922 Control Valve Group modification. Overcenter valve (1). Mounting plate (2). Bypass port (A). Drilled passage (B). Large tank port (C). Small tank port (D).