Clean the block (Item 1) [Figure 20-130-5] to remove dirt before disassembly. Block ports are labeled for correct assembly.
Remove the plug (Item 2) [Figure 20-130-5].
Installation: Tighten the plug to 25 – 30 ft.-lb. (34 – 40,6 N•m) torque.
Remove the spring guide (Item 1), spring (Item 2) and the spool (Item 3) [Figure 20-130-6].
Check the O-ring (Item 4) [Figure 20-130-6] on the plug and replace as needed.
NOTE: This plug is a zero leak plug and should not be removed. If removed damage may occur and
the plug and O-ring must be replaced.
Do not remove the plug (Item 1) [Figure 20-130-7].
Installation: Tighten the plug to 12 – 14 ft.-lb. (16,3 – 19 N•m) torque.
Remove the check valve (Item 1) [Figure 20-130-8].
Installation: Oil the check valve and O-rings and tighten the check valve to 20 – 25 ft.-lb. (27,1 – 34 N•m) torque.
Inspect the check valve (Item 1) and piston assembly (Item 2) [Figure 20-130-9].
Check the O-rings and back up washers (Item 3) [Figure 20-130-9] on the check valve and piston assembly and replace as needed.
Do not remove the plugs (Item 1) [Figure 20-130-10].
NOTE: Do not remove plugs. If the plugs are removed the internal pressure relieving spring setting will be altered.
Remove the plug (Item 1) [Figure 20-130-11], inspect the O-ring and replace as needed.
Installation: Tighten the plug (Item 1) [Figure 20-130-11] to 12 – 14 ft.-lb. (16,3 – 19 N•m) torque.
Remove the orifice screw (Item 1) located behind the plug (Item 2) [Figure 20-130-12].
Installation: Tighten the orifice screw (Item 2) [Figure 20-130-12] to 6 – 8 ft.-lb. (8,1 – 10,8 N•m) torque.
NOTE: This plug is a zero leak plug and should not be removed. If removed damage may occur and the plug and O-ring must be replaced.
Do not remove the plug (Item 1) [Figure 20-130-13].
Remove the solenoid nut (Item 2) [Figure 20-130-13].
Installation: Tighten the solenoid valve stem nut to 15 – 45 in.-lb. (1,7 – 5,1 N•m) torque.
Remove the first solenoid coil (Item 1) and the second solenoid coil (Item 2) [Figure 20-130-14].
NOTE: Remember the solenoid coil orientation for ease of installation.
Remove the solenoid stem (Item 1) [Figure 20-130-15].
Installation: Tighten the solenoid stem to 20 – 25 ft.-lb. (27,1 – 34 N•m) torque.
Remove the armature rod assembly (Item 1) [Figure 20-130-16].
Inspect the solenoid stem (Item 1), armature assembly (Item 2) and the spool (Item 3) for damage [Figure 20-130-17].
NOTE: If the solenoid stem is damaged (Item 1) check the armature assembly (Item 2) for damage.
The armature assembly (Item 2) and spool (Item 3) are non-serviceable parts. If they are damaged, order a new power Bob-Tach block assembly from Bobcat parts [Figure 20-130-17].
Remove the screened orifice plug (Item 1) [Figure 20-130-18].
Installation: Tighten the screened orifice plug to 11 – 12 ft.-lb. (14,9 – 16,3 N•m) torque.
Inspect the screened orifice plug (Item 1) [Figure 20-130-19] for damage replace as needed. If the screened orifice plug is blocked replace with a new plug.
Check the O-ring (Item 2) [Figure 20-130-19] and replace as needed.
