TM 55-1925-286-13&P
UNIT MAINTENANCE
AIR COMPRESSOR FOR
INLAND AND COASTAL LARGE TUG (LT)
UNIT TROUBLESHOOTING PROCEDURES
INITIAL SETUP:
Tools and Equipment:
References:
Tool Kit, General Mechanic's (Item 11, Table 3,
FM 55-509
TM 55-1925-273-24&P
Tool Kit, Electrician's (Item 10, Table 3,
Personnel Required:
Two Watercraft Engineers, 88L
INTRODUCTION
The following troubleshooting procedures are included in this manual:
Malfunction/Symptom
Procedure
Compressor Will Not Run .................................................................................................... 1
Starting Air Receivers Will Not Pressurize To 250 PSI (17.2 bar) .......................................... 2
Starting Air Receivers Pressurize Above 250 PSI (17.2 bar) .................................................. 3
Ship's Service Air Pressure Is Below 125 PSI (8.6 bar) ........................................................ 4
Ship's service Air Pressure Is Above 125 PSI (8.6 bar) ......................................................... 5
Compressor Loads And Unloads Excessively ...................................................................... 6
Motor Stalls Or Circuit Breaker Trips Repeatedly ................................................................. 7
V-belt Wears Quickly Or Jumps Off The Sheave .................................................................. 8
Compressor Vibrates Excessively ....................................................................................... 9
Compressor Overheats ...................................................................................................... 10
Compressor "Knocks" During Operation ............................................................................ 11
Compressor Lubricant Appears Milky ................................................................................. 12
Compressor Oil Pressure Low ........................................................................................... 13
Automatic Drain Does Not Drain ........................................................................................ 14
Automatic Drain Drains Continuously ................................................................................. 15
0009 00-1