Robinsons R66 - 79-40 Engine Oil Line Assemblies and Fittings

Page 79.8 Chapter 79 Engine Oil System R66 Maintenance Manual SEP 2012
79-40 Engine Oil Line Assemblies and Fittings
Refer to R66 Illustrated Parts Catalog (IPC) Figure 79-9.
A. Removal
1. Drain engine oil per Section 12-60.
2. Refer to Figure 79-3. Remove hardware securing line assembly clamps.
3. Disconnect F723 line assembly B-nuts from engine, F649-1 oil cooler, and/or G689-1
oil tank assembly fittings, as required. Cap fittings and plug lines.
4. Carefully remove line assembly from engine compartment.
B. Installation
1. Refer to Figure 79-3. Remove caps from unions. Torque check F649-1 oil cooler
unions and/or G689-1 oil tank assembly nuts per Section 20-33; torque check engine
(oil line) unions and/or check valve (early R66s) per Section 20-33, as required.
2. Remove plugs and connect F723 line assembly B-nuts to engine, oil cooler, and/or tank,
as required. Verify 0.2 inch minimum clearance between shaft weldment and firewall
grommet; verify equal gap concentrically between shaft and box assembly hole edges.
Adjust F174-1 support weldment rod ends per Section 53-31 as required. Special
torque B-nuts per Section 20-33 and torque stripe fittings.
3. Install hardware securing line assembly clamps.
4. Service engine oil per Section 12-60.