Specifications

ManualsBrandsBENDIX ManualsAir CompressorTU-FLO 700 COMPRESSOR

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a small hole is drilled in the cylinder block for this purpose.

Position the saddle (35) between the unloader piston guides

(38), so its forks are centered on the guides. Install the

unloader spring (34), making sure it seats over the spring

seats both in the block and on the saddle. Position and

install the inlet valve guides (38), then drop the inlet valves in

their guides. The inlet valves should be a loose sliding fit in

the guides.

CYLINDER HEAD

Install the inlet valve springs in the cylinder head by applying

a turning motion to the spring after it is in the head. The

turning motion should dig the spring wire into the spring

seat in the bottom of the spring bore in the head Should this

procedure fail after repeated attempts, use a very small

quantity of grease to hold them in place, just enough to

keep the springs from falling out. Place the cylinder head

gasket on the cylinder block. Carefully align the cylinder

head assembly on the block and install the cap screws,

tightening them evenly to a torque of 15-19 foot pounds.

BASE PLATE OR BASE ADAPTER

Position the base plate or base adapter gasket on the

crankcase and install the base plate or base adapter as

marked before disassembly Tighten the six cap screws

securing the cast iron base adapter evenly to a torque of 38-

45 foot pounds, and 12-16 foot pounds for base plate or

aluminum cover.

TESTING REBUILT COMPRESSOR

In order to properly test a compressor under operating

conditions, a test rack for correct mounting, cooling,

lubricating, and driving the compressor is necessary. Such

tests are not compulsory if the unit has been carefully rebuilt

by an experienced person. A compressor efficiency or build-

up test can be run which is not too difficult. An engine

of the end cover. Fasten the end cover to the crankcase with

the four cover cap screws. Torque the cap screws to 175-

225 inch pounds in a cross pattern. Note: For cast iron

flange adapters, torque the four 7/16 in. cap screws to 38-

45 foot pounds. For die cast aluminum end covers, torque

the four 7/16 in. cap screws to 25-30 foot pounds. All end

covers using 5/16 in. cap screws or stud and nuts are torqued

to 15-18 foot pounds. For through drive compressors with a

cast iron end cover, torque the four 7/16 in. cap screws to

25-30 foot pounds.

PISTONS AND CONNECTING RODS

If new wrist pin bushings are to be used, they should be

pressed into the connecting rods so that the oil hole in the

bushing lines up with the one in the rod. The new bushings

should then be reamed or honed to provide between .0001

in. (.00254 mm) and .0006 in. (.01524 mm) clearance on

the wrist pin. Position the connecting rod in the piston and

press in the wrist pin.

Pistons installed in compressors manufactured prior to

November, 1976, will have the wrist pin secured in the piston

by a lock wire extending through matching holes in wrist pin

and piston boss, anchored in a hole in the side wall of the

piston. If the original pistons are used the wrist pin must be

pressed in so the hole in the wrist pin aligns with that of the

piston and secure same by inserting the new lockwire

through the hole in piston and wrist pin and lock the wire by

snapping the short 90 section into the lockwire hole in the

bottom of the piston.

Compressors built after November, 1976, will have the wrist

pin secured by Teflon buttons in either end of the wrist pin,

allowing the wrist pin to float. The Teflon buttons pc. no.

292392 may be used with either new or old wrist pins. The

later design pistons have two rings above the wrist pin and

one below. Install the piston rings in the correct location

with the ring pipmarks up. Stagger the position of the ring

gaps. Prelubricate the piston, piston rings, wrist pins and

connecting rod.

CYLINDER BLOCK

Allign gasket (12), crankcase and cylinder block and secure

with cap screws (23). Torque to 15-19 foot pounds.

UNLOADER

A new unloader kit should used when rebuilding. (Figure

12). (Piece Number 279615). The unloader pistons in the kit

are prelubricated with a special lubricant piece number

239379 and need no additional lubrication. Install the unloader

pistons (28) in their bores being careful not to cut the o-

rings. Position the unloader plungers (37) in their guides

(38) and slip them in and over the tops of the pistons. Install

the unloader spring seat (36) in the cylinder block inlet cavity;

FIGURE 12- UNLOADER MECHANISM