Department of the Army Technical Manual TM 10-751
Organist's Manual for Electronic Organ
AN/TNP-1
Department of the Army • December 1949
SECTION VI
CARE AND MAINTENANCE
20. Maintenance Responsibility
Organizational maintenance, or routine preventive care and adjustment, of the electronic organ will be performed by the organist or the using organization. Other maintenance should be referred through proper channels.
a. IN ZONE OF INTERIOR.
- (1) Field maintenance for class I and II installations, except at quartermaster class II installations having repair facilities, will be the responsibility of commanding generals of armies; of the Military District of Washington for areas under its control; and of major air force commanders for air force installations under their control. Field maintenance at specific installations may be otherwise assigned by mutual agreement or by direction of the Secretary of Defense in the interest of economy and efficiency.
- (2) Depot maintenance will be accomplished by the Quartermaster General in designated depot maintenance shops or through contractual services for the Departments of the Army and the Air Force.
b. IN OVERSEA AREAS. Maintenance of the electronic organ in oversea installations will be accomplished as directed by appropriate commanders.
21. General Operative Care
It is the responsibility of every organist to keep the instrument he uses in the best possible condition. This entails frequent inspection, followed when necessary by reports of defective or unserviceable items. Reports should be made through channels, as indicated in paragraph 20. Equipment also must be protected against avoidable damage by keeping it clean and well lubricated.
22. Cleaning
a. GENERAL. Clean all wooden parts and playing keys with clean lint-free cloth (cheesecloth).
b. KEY CONTACTS. If a key has become silent as a result of dust accumulation on the key contacts: strike it 15 or 20 times in a rapid staccato manner. If this does not dislodge dust particles and clear the contacts, report the difficulty through the proper channels.
c. PEDAL CLAVIER. To clean the pedal clavier, remove it from its position in front of the console. Proceed in the following manner:
- (1) Remove the organ bench.
- (2) Lift the front of the pedal clavier and pull it slightly up and outward.
- (3) Clean the pedal clavier with cheesecloth and dry-cleaning solvent. Sweep dust and lint from the floor.
- (4) Replace pedal clavier by lifting slightly at the front and sliding the pedal contacts carefully into the base of the console.
- (5) Replace the organ bench.
23. Lubricating
a. APPROVED LUBRICANTS. Lubricating materials required for servicing the electronic organ, AN/TNP-1 (see SB 38-5-3), consist of the following:
| Lubricant symbol | Standard nomenclature |
| RL* | Oil, recoil, light. |
| PL | Oil, lubricating preservative, special. |
*Lubricant RL will ignite at 175° F. For this reason observe proper precautions to avoid overheating when handling or storing.
b. CONSOLE. By flowing along numerous fabric wicks, oil is supplied to the motors as well as other moving organ parts from centralized troughs. Oil troughs are supplied from four oil cups. The location of these oil cups is given on the oiling instruction plate (see fig. 3). Lubricate the console every 90 days in the following manner:
- (1) Remove rear organ panel by unscrewing the three thumbscrew bolts.
- (2) Use lubricant PL to fill oil cups one-half full
- (3) Replace rear organ panel.
c. REVERBERATION ATTACHMENT. The reverberation attachment (see par. 5) consists of a spring assembly with springs enclosed within oil tubes (see fig. 6). Oil tubes must be inspected periodically and, when necessary, lubricated as follows:
(1) Use screw driver to remove right-hand screws from the reverberation attachment protective cover. Swing the cover outward on its hinges.
(2) Use lubricant RL to fill the three long brass oil tubes to a point 1 inch from the top.
(3) Use lubricant RL to flIt the short oil tube as follows:
- (a) To a point 2 inches from the top for operation in temperatures above 95° F.
- (b) To a point 3 inches from the top for operation in temperatures between 50° and 95° F.
- (c) To a point 4 inches from the top for operation in temperatures below 50° F.
