GRILL AS 4893166 - Caterpillar

Swing Pump Compartment
(2) Swing pump. (7) Block. (21) Pilot pump. (25) Tap (swing pump delivery pressure). (26) Tap (pilot pump delivery pressure).
Swing Pump Compartment
(1) Delivery hose. (2) Swing pump. (5) Pilot hose. (6) Pilot hose. (21) Pilot pump. (22) Regulator. (26) Tap (pilot pump delivery pressure).
Main Control Valve Compartment (Typical Example)
(3) Return hose. (4) Return line. (27) Main control valves.
Pilot Oil Manifold Compartment (In Rear Of Main Control Valves)
(11) Pilot oil manifold. (28) Tap (pilot pump delivery pressure).
Flow Meter
(15) Flow meter (4C9910). (29) Multitach group (6V2100). (30) Valve.
To prevent personal injury or equipment damage from failure of the flow meteror associated circuit components because of blocked pump flow, make sure before starting the engine that the flow meter valve is fully open (turned counterclockwise).
1. Position the machine on level ground and stop the engine.2. Release the pressure in the hydraulic system. See the section in this module, "Release Of Pressure In The Hydraulic System".3. Install necessary tools in accordance with the layout illustrations 3 and 5 as follows: a. Disconnect delivery hose (1) from swing pump (2).b. Install plate (7I7132) (13) and flange (5P8077) (14) to end of delivery hose (1).c. Disconnect return line (4) from return hose (3).d. Install cover (2J5608) (10) and flange (1P4582) (9) to the end of return line (4).e. Connect flow meter (4C9910) (15) between swing pump (2) and return hose (3).f. Disconnect pilot hose (5) from swing pump regulator (22). Install plug (6V9508) (16) in to the open end of pilot hoses (5).g. Connect hose (6V3014) (23) between tap (26) and the open port of regulator (22) where pilot hose (5) was removed.h. Disconnect pilot hose (6) from regulator (22). Connect pressure gauge (8T0855) (31) between pilot hose (6) and the open port of regulator (22). A 4900 kPa (700 psi) pressure gauge can be used in place of a 8T0855 pressure gauge.3. Install pressure gauge (8T0861) (17) at tap (25). A 49 000 kPa (7100 psi) pressure gauge can be used in place of a 8T0861 pressure gauge.4. Install 4900 kPa (700 psi) pressure gauge (12) to tap (28) of pilot oil manifold (11).5. Install multitach group (6V2100) (29) on the engine. This is to read the engine speed rpm.6. Start the engine and place the power mode selector switch in mode III position.7. Place the engine speed dial at position "10" and run the engine at no load speed of 1860 50 rpm with AEC switch OFF. (Read rpm after a elapse of 3 seconds after the speed dial has been placed in position "10".)8. Place the swing lock pin in the LOCKED position.9. Increase the hydraulic oil temperature to 55 5°C (131 9°F). To do this, move the stick IN and OUT its full travel several times.10. Pressure gauge (12) at tap (28) should read 3450 + 100 -0 kPa (500 +14 -0 psi).Flow Test
To prevent personal injury and/or equipment damage from failed lines or components while the flow meter is returned to the open flow