Model 650 Maintenance Manual (Rev 38)

12-20-15 (Rev 38)

ENTRANCE DOOR - SERVICING

1. General
A. You must do the servicing of the airplane in an area with no contamination from sand, dust or other environmental conditions that
can cause unsatisfactory lubrication servicing.
B. Obey all entrance door maintenance and safety precautions before and during the lubrication servicing.
C. The servicing equipment includes grease guns, oil cans, brushes, clean cloths, and other equipment as needed for the correct
lubrication servicing.
2. Main Entrance Door Lubrication
WARNING: Do not put lubricants next to an ignition source. Lubricants are flammable.
A. Main Entrance Door Lubrication. Refer to Chapter 52, Entrance Door - Inspection/Check, Task 52-10-00-220.
(1) Clean all the grease fittings and lubrication points with a clean, dry cloth before you do the lubrication servicing.
(2) Lubricate all the areas shown in Figure 301 with the correct lubricant. Refer to Chapter 12, Scheduled
Lubricating/Cleaning - Description and Operation.
B. Door Step Internal Spring Pushrod Lubrication.
(1) Open door approximately half way.
(2) Using an extension tube on the nozzle of the LPS-2 lubricant can, direct lubricant into the internal shaft of the pushrod.
(3) Move upper step riser several times to extend and compress pushrod.
(4) Apply more lubricant to make sure that the internal surfaces are thoroughly coated.
(5) Repeat procedure for the other pushrod.
Table 301. Lubrication Specifications
ITEM DESCRIPTION LUBRICATION TYPE APPLICATION FIGURE NUMBER
Pivot Point Bolts and Screws OGP Oil Can 301 Sheet 1
Latch Handle and Linkage OGP Oil Can 301 Sheet 1
Counterbalance Spring GLS Spray 301 Sheet 1
Inboard/Outboard, Forward and
OGP Oil Can 301 Sheet 1
Aft Bushings
Door Hinge Bolts GHL (or) OGP Hand (or) Oil Can 301 Sheet 2
Internal Spring Pushrods LPS 2 Aerosol Can 301 Sheet 2
Door Gears OGP Hand 301 Sheet 2
Drive Arm Weld Assembly/ Tube
GHL Hand 301 Sheet 2
Weld Assembly
Latch Pins and Sockets OAC Spray 301 Sheet 1
Table 302. Recommended Lubricants
PROCUREMENT
LUBRICATION TYPE LUBRICANT DESCRIPTION APPROVED ALTERNATE
SPECIFICATION
Grease, Aircraft and Instrument,
GHL MIL-PRF23827 MIL-PRF-7870
Gear and Actuator Screw
OGP MIL-PRF-7870 Oil, General Purpose MIL-PRF-23827
OAC MIL-L-23398 Perma Slik G.
GLS None Grease, Lithium Spray
Rust Inhibitor Lubricant, medium
LPS 2 None
weight
TASK 12-20-15-640
3. Cabin Entrance Door Hinges Lubrication
A. Main Entrance Door Hinge Bolts Lubrication. Airplanes -0001 thru -0089 except airplanes with stainless steel hinge bolts and

Copyright © Textron Aviation Inc. Page 1 of 4

Retain printed data for historical reference only. For future maintenance, use only current data. Print Date: Fri Nov 17 14:51:07 CST 2023
 Model 650 Maintenance Manual (Rev 38)
12-20-15 (Rev 38)

bushings. Refer to Chapter 52, Entrance Door - Maintenance Practices.

NOTE: Perform lubrication in accordance with schedule provided in Chapter 5, Inspection Time Limits, and
whenever high pressure washing is performed in and around the door hinge area.
NOTE: When lubricating the door hinges and hinge bolts, the door must be closed and latched. Remove,
lubricate and install one hinge bolt at a time.
(1) Gain access to the main entrance door hinge bolts.
(a) With the entrance door open, separate the forward and aft spade door cable terminals from their respective tee
brackets by removing cotter pins, nuts and bolts. Allow the spade door to hinge open.
(2) Close and latch the main entrance door.
WARNING: Do not open door with door hinge bolts removed; damage to hinge, door and/or injury to personnel can
result.
CAUTION: Place a sign on the door, caution, do not open door - maintenance on door in progress.
(3) Remove one of the hinge bolts by removing the cotter pin, nut and washers. If removal of the hinge bolt is difficult due to
bolt being seized to a bushing(s), refer to Chapter 52, Entrance Door - Maintenance Practices.
NOTE: If the removed hinge bolt is not chrome plated stainless steel, it must be replaced with a
NAS6708DE42 hinge bolt which is chrome plated stainless steel.
(4) Clean and examine the hinge bushings for corrosion. If the bushings are corroded, they must be replaced. The
replacement bushings are stainless steel. Refer to the Model 650 Illustrated Parts Catalog, Chapter 52 for the replacement
bushings.
WARNING: Do not open the entrance door with only one hinge bolt installed. Damage to the hinge will result.
(a) If it has been determined that the bushings must be replaced, refer to Chapter 52, Entrance Door - Maintenance
Practices for replacement of the hinge bushings.
(b) If examination of the hinge bushings reveals no corrosion or damage, lubricate the hinge bolt, bushings and hinge
fingers with grease (MIL-G-23827 or MIL-G- 81322).
1 Coat the inside diameter of the bushings, the bolt shank and the hinge fingers mating surfaces.
(5) Install and secure hinge bolt with washers and nut (bolts to be installed with heads away from each other). A washer is
installed under the bolt head and one under the nut. Hinge bolt should be tightened to a snug fit only, so as not to produce a
bind on the hinge. Install cotter pin.
(6) Perform items (3) through (5) above for the opposite hinge bolt to be lubricated.
(7) Reconnect (and adjust if required) the forward and aft spade door cable terminals to their respective tee brackets, with
bolts, nuts and cotter pins.
B. Main Entrance Door Hinge Bolts Lubrication (Airplanes -0090 and On and Airplanes -0001 thru - 0089) with stainless steel
hinge bolts and bushings. Refer to Chapter 52, Entrance Door - Maintenance Practices.
NOTE: Perform lubrication in accordance with schedule provided in Chapter 5, Inspection Time Limits, and
whenever high pressure washing is performed in and around the door hinge area.
(1) Lubricate with general purpose oil. No disassembly is required.
END OF TASK

Copyright © Textron Aviation Inc. Page 2 of 4

Retain printed data for historical reference only. For future maintenance, use only current data. Print Date: Fri Nov 17 14:51:07 CST 2023
 Model 650 Maintenance Manual (Rev 38)
12-20-15 (Rev 38)

Figure 301 : Sheet 1 : Main Entrance Door Lubrication

Copyright © Textron Aviation Inc. Page 3 of 4

Retain printed data for historical reference only. For future maintenance, use only current data. Print Date: Fri Nov 17 14:51:07 CST 2023
 Model 650 Maintenance Manual (Rev 38)
12-20-15 (Rev 38)

Figure 301 : Sheet 2 : Main Entrance Door Lubrication

Copyright © Textron Aviation Inc. Page 4 of 4

Retain printed data for historical reference only. For future maintenance, use only current data. Print Date: Fri Nov 17 14:51:07 CST 2023