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This procedure will describe how to replace the check valve at the air cylinder side of the tool changer to a compression fitting and move the check valve to the solenoid side. 

The following kit pertains to this instruction:

• 93-3278: 58-7243 PO CHECK VALVE REPLACEMENT KIT
• 93-30-2110B: CAROUSEL ASSY SMTC40-40

SOLENOID CAUTION:

Some of the solenoid configurations may not work as shown in the images due to space available around the solenoid . If that is the case some adjustments may have to be made to fit the check valve and compression fitting. 

There are two solenoids you may encounter, a 4 port and a 5 port, they should follow the general configurations shown in the image.

• For the 4 port solenoid the check valve [1] should go in the port across from the compression fitting in port B [3] and a fitting to connect the air line [2] should be assembled to the check valve [1].. 
• For the 5 port solenoid the check valve [4] goes in between the reducer [6] and air line fitting [5] in the port labeled IN. The compression fitting [7] goes in the port labeled A.

This picture shows the air cylinder on the 50-Pocket 50T tool changer [1] and the 30-Pocket 50T tool changer [2].

For the 50 & 30-Pocket tool changer, this procedure shows how to access the air cylinder through the front of the carousel. As an alternative, you can remove the carousel to access the air cylinder.

All other tool changers air cylinders may be accessed the same way.

If you remove the carousel please use the appropriate lifting aids to safely lift the tool changer out of the machine. 

WARNING: There is a locknut on the  30-Pocket 50T tool changer, use tool P/N T-1357 to remove and replace the bearing lock nut (P/N 51-2043). Torque the bearing lock nut to 80 ft-lb (108 Nm).

At the air cylinder replace the 58-7243 check valve [1a] & 58-7244 tee fitting [1b] with the 58-16708 FITG POLY1/4F NPT1/4M STR BRASS [2a] and 58-1349 FITG PC1/4F NPT1/4M STR BRASS [2b].

At the solenoid side replace 58-3070 [4] with 58-16706 compression fitting [6] at output B. Add 58-2019 check valve [5] at the input across from output B between the existing fittings and solenoid [3].

At the air cylinder replace the 58-7243 check valve [1a] & 58-7244 tee fitting [1b] with the 58-16708 FITG POLY1/4F NPT1/4M STR BRASS [2a] and 58-1349 FITG PC1/4F NPT1/4M STR BRASS [2b].

At the solenoid side replace 58-3070 [4] with 58-16706 compression fitting [6] at output B. Add 58-2019 check valve [5] at the input across from output B between the existing fittings and solenoid [3].

At the air cylinder replace the 58-7243 check valve [1a] & 58-7244 tee fitting [1b] with the 58-16708 FITG POLY1/4F NPT1/4M STR BRASS [2a] and 58-1349 FITG PC1/4F NPT1/4M STR BRASS [2b].

At the solenoid side replace 58-3070 [4] with 58-16706 compression fitting [6] at output B. Add 58-2019 check valve [5] at the input across from output B between 58-16700 FITG NPT1/8F NPT1/8M 90 BRASS and 58-1859 FITG PC3/8F NPT1/8M STR BRASS [3] built as shown.

At the air cylinder replace the 58-7243 check valve [1a]  & 58-7244 tee fitting  [1b] with the 58-0914 FITG POLY3/8F NPT1/4M 90 BRASS (90 degree compression) & 58-0562 FITG LBO1/4 NPT1/8M STR [2]. 

At the air cylinder replace the 58-7243 check valve [1a]  & 58-7244 tee fitting [1b] with the 58-16708 FITG POLY1/4F NPT1/4M STR BRASS [2] and 58-0562 FITG LBO1/4 NPT1/8M STR, this assembly has the reducer at the cylinder and a plug [3] . 

At the solenoid side insert 58-2019 check valve [7]  between the reducer and elbow fitting [5] in the port labeled in. Replace the PTC fitting in port A [4] with 58-16755 FITG COMP 1/4 X 1/8 MNPT BR STR or 58-3075 FITG POLY1/4F NPT1/8M 90 BRASS [6].

At the air cylinder replace the 58-7243 check valve [1a] & 58-7244 tee fitting [1b] with the 58-16708 FITG POLY1/4F NPT1/4M STR BRASS [2a] and 58-1349 FITG PC1/4F NPT1/4M STR BRASS [2b].

At the solenoid side replace 58-3070 [4] with 58-16706 compression fitting [6] at output B. Add 58-2019 check valve [5] at the input across from output B built with 58-16700 FITG NPT1/8F NPT1/8M 90 BRASS and 58-1859 FITG PC3/8F NPT1/8M STR BRASS.

At the air cylinder replace the 58-7243 check valve [1a] & 58-7244 tee fitting [1b] with the 58-16708 FITG POLY1/4F NPT1/4M STR BRASS [2a] and 58-1349 FITG PC1/4F NPT1/4M STR BRASS [2b].

At the solenoid side insert 58-2019 check valve [7]  between the reducer and elbow fitting [5] in the port labeled in. Replace the PTC fitting in port A [3] with 58-16755 FITG COMP 1/4 X 1/8 MNPT BR STR or 58-3075 FITG POLY1/4F NPT1/8M 90 BRASS [6].