HEATER CASES

See PLENUMS.

HEATER CONTROL VALVES

HEATER CONTROL VALVE INSPECTION

Condition Code Procedure

Application incorrect ... B ............ Require replacement.

Attaching hardware

broken ................. A ... Require repair or replacement

of hardware.

Attaching hardware

missing ................ C .......... Require replacement of

hardware.

Attaching hardware not

functioning ............ A ... Require repair or replacement

of hardware.

Binding ................. 2 .. Suggest repair or replacement.

Coolant leak ............ A .. Require repair or replacement.

Disconnected ............ A .. Require repair or replacement.

Malfunctioning .......... A ........... (1) Require repair or

replacement.

Missing ................. C ............ Require replacement.

Restricted .............. A .. Require repair or replacement.

Seized .................. A .. Require repair or replacement.

Vacuum leak ............. A .. Require repair or replacement.

(1) - Includes inoperative, intermittent operation, or

failure to perform all functions.

HEATER CORES

HEATER CORE INSPECTION

Condition Code Procedure

Air flow obstruction .... A .. Require repair or replacement.

Attaching hardware

broken ................. A ... Require repair or replacement

of hardware.

Attaching hardware

missing ................ C .......... Require replacement of

hardware.

Attaching hardware not

functioning ............ A .. Require repair or replacement

of hardware.

Connection leaking ...... A .. Require repair or replacement.

Corroded ................ 1 .. Suggest repair or replacement.

Disconnected ............ A .. Require repair or replacement.

Fins damaged, affecting

performance ............ A .. Require repair or replacement.

Fins damaged, not

affecting performance .. .. ........ No service suggested or

required.

Internal restrictions,

affecting performance .. A .. Require repair or replacement.

Leaking ................. A .. Require repair or replacement.

Missing ................. C ............ Require replacement.

HEATER HOSES

HEATER HOSE INSPECTION

Condition Code Procedure

Application incorrect ... B ............ Require replacement.

Connected incorrectly ... A ................. Require repair.

Corroded, not reusable .. 1 ............ Suggest replacement.

Cracked ................. A .. Require repair or replacement.

Hard (brittle) .......... 1 .. Suggest repair or replacement.

Inner fabric (webbing)

damaged ................ A ............ Require replacement.

Insufficient clamping

force, allowing hose to

leak ................... A .. Require repair or replacement.

Leaking ................. A .. Require repair or replacement.

Maintenance intervals ... 3 ............ Suggest replacement.

Melted .................. 1 .. Suggest repair or replacement.

Missing ................. C ............ Require replacement.

Outer covering damaged .. 1 ............ Suggest replacement.

Outer covering damaged to

the extent that the inner

fabric is visible ...... A ............ Require replacement.

Protective sleeves

damaged ................ 2 . Suggest replacement of sleeves.

Protective sleeves

missing ................ 2 . Suggest replacement of sleeves.

Restricted, affecting

performance ............ A .. Require repair or replacement.

Restricted, not affecting

performance ............ 2 .. Suggest repair or replacement.

Routed incorrectly ...... 2 ................. Suggest repair.

Safety clip missing ..... C ............ Require replacement.

Spongy .................. 1 .. Suggest repair or replacement.

Stripped ................ A ............ Require replacement.

Surface cracks (dryrotted)

................ 1 .. Suggest repair or replacement.

Swollen ................. B ............ Require replacement.

Threads damaged ......... A .. Require repair or replacement.

Threads stripped (threads

missing) ............... A ............ Require replacement.

Type incorrect .......... 1 .. Suggest repair or replacement.

HIGH PRESSURE RELIEF VALVES (HPRV)

HIGH PRESSURE RELIEF VALVE (HPRV) INSPECTION

Condition Code Procedure

Inoperative ............. A ........... (1) Require repair or

replacement.

Leaking ................. A .. Require repair or replacement.

Missing ................. C ............ Require replacement.

Threads damaged ......... A .. Require repair or replacement.

Threads stripped (threads

missing) ............... A ............ Require replacement.

(1) - Inoperative includes intermittent operation or out of

OEM specification.

IDLERS

See TENSIONERS.

IN-LINE FILTERS

IN-LINE FILTER INSPECTION

Condition Code Procedure

Connection leaking ...... B .. Require repair or replacement.

Leaking ................. A .. Require repair or replacement.

Restricted .............. A ............ Require replacement.

Threads damaged ......... A .. Require repair or replacement.

Threads stripped (threads

missing) ............... A ............ Require replacement.

METAL FITTINGS

See

AIR CONDITIONING METAL LINES, HOSES AND FITTING ASSEMBLIES.

METAL LINES

See

AIR CONDITIONING METAL LINES, HOSES AND FITTING ASSEMBLIES.

MIX AND AIR CONTROL DOORS (BLEND DOORS)

See PLENUMS.

O-RINGS

O-RING INSPECTION

Condition Code Procedure

Leaking ................. A ........... (1) Require repair or

replacement.

(1) - Require inspection of mating and sealing surface and

repair or replace as necessary.

ORIFICE TUBES

ORIFICE TUBE INSPECTION

Condition Code Procedure

Application incorrect ... B ............ Require replacement.

Bypassing internally .... A .. Require repair or replacement.

Filter screen torn ...... A ............ Require replacement.

Installation incorrect .. B ................. Require repair.

Restricted .............. A .. Require repair or replacement.

PILOT-OPERATED ABSOLUTES (POAS)

PILOT-OPERATED ABSOLUTE (POA) INSPECTION

Condition Code Procedure

Connection damaged ...... B .. Require repair or replacement.

Fitting damaged ......... B .. Require repair or replacement.

Inoperative ............. A ........... (1) Require repair or

replacement.

Leaking ................. A .. Require repair or replacement.

Threads damaged ......... A .. Require repair or replacement.

Threads stripped (threads

missing) ............... A ............ Require replacement.

(1) - Inoperative includes intermittent operation or out of

OEM specification.

PLENUMS

PLENUM INSPECTION

Condition Code Procedure

Air control door

binding ................ A ... Require repair or replacement

Air control door

broken ................. A .. Require repair or replacement.

Air control door

leaking ................ A .. Require repair or replacement.

Air control door

seized ................. A .. Require repair or replacement.

Attaching hardware

broken ................. A ... Require repair or replacement

of hardware.

Attaching hardware

missing ................ C .......... Require replacement of

hardware.

Attaching hardware not

functioning ............ A ... Require repair or replacement

of hardware.

Cracked ................. 2 .. Suggest repair or replacement.

Drain hole restricted ... A ................. Require repair.

Drain plugged ........... A ................. Require repair.

Duct disconnected ....... A .. Require repair or replacement.

Duct leaking ............ A .. Require repair or replacement.

Duct missing ............ C ............ Require replacement.

Duct restricted ......... A .. Require repair or replacement.

Leaking ................. A .. Require repair or replacement.

Noisy ................... 2 ..... Suggest cleaning or repair.

Odor .................... 2 ..... Suggest cleaning or repair.

Restricted .............. A .... Require cleaning, repair, or

replacement.