ELBOW 0043061 - Caterpillar

The Procedure Before The Accumulator Purges
Place the hydraulic lockout switch in the UNLOCK position.
Turn the engine start switch to the ON position.
Leave the key in the ON position.
Slowly move the implement control for the bulldozer blade into the LOWER position in order to lower the blade to the ground.
Slowly move the implement control for the ripper into the LOWER position in order to lower the ripper to the ground.The Procedure After The Accumulator Purges
If the engine starts, perform the above procedure.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to local regulations and mandates.
If the engine does not start, perform the following procedure.After the engine has been stopped for a longer period, the control levers will not lower the implements to the ground.There are two mechanical methods that can be used to lower the attachments.Accumulator Charging
Illustration 1 g03007917
Open the rear access cover on the left side of the machine.
Illustration 2 g02420631
Remove the protective cap from pressure tap (1). This pressure tap is for the remote pilot supply. The first method is explained in steps 2.a through 2.e.
Illustration 3 g01059993
(A) Changed components location (B) 3P-2233 Coupler Assembly (not shown) (2) Relief valve (3) Handle (4) Bypass valve (5) Brake release pump
Use an FT1845 Brake Release Pump (5) and 3P-2233 Coupler Assembly (B) to control oil pressure to the accumulator.
Remove the components that are indicated by shaded area (A). Plug the pressure hose at the connection "3/8 - 18 NPT".
Turn the handle of the bypass valve (5) to the closed position.
While you are pumping the handle (4), observe the opening pressure of the relief valve (3) .
Adjust the opening pressure of the relief valve. Set the pressure to 3100 70 kPa (450 10 psi).
The second method is explained in steps 3.a through 3.e.
Charge the pilot hydraulic system at the pressure tap for remote pilot supply (1) in order to lower the implements.
Connect 3P-2233 Coupler Assembly (B) to 9J-6190 Adapter Union on the pump pressure hose .
Turn the bypass valve handle (4) to the CLOSED position.
Initially, rapidly move the pump handle. This action will produce a large volume of oil flow.
Fully seat the quick connector seal. Seating the seal is evident by a sudden rise in the oil pressure. When the seal is properly seated, the pressure rises to the maximum.Note: The hydraulic system can now be pressurized.
Close the access door.
Place the hydraulic lockout switch in the UNLOCK position.
Turn the engine start switch key to the ON position.
Leave the key in the ON position.
Slowly move the implement control for the bulldozer blade in the LOWER position in order to lower the blade to the ground.Manual Lowering of the Dozer