RING-SEAL EXTENSION 8P8744 - Caterpillar

3208 ( 90N1-54556, 99R1-403, 40S, 75V1-7539, 79V1-8713, 62W1-9537, 32Y1-74574, 93Z1-154 ),
215 ( 57Y, 14Z*),
225 ( 51U, 61X***),
613 ( 38W***),
943 ( 3Y, 31Y, 4Z, 19Z*),
953 ( 76Y, 77Y, 5Z, 20Z*),
953 ( 78Y, 44Z**)*3204 Engine serial number 10X1 - 10X2210**3204 Engine serial number 45V29936 - 45V328741W4259 Valve Spring, 1W9897 Valve Spring Seat Washer and 1W4260 Valve Spring Retainers are the service replacement parts for the former valve springs, seats and retainers on the above engines. If these new parts are installed, new 1W2459 Fuel Nozzle Clamp Assemblies must also be installed. These new valve springs have a larger outside diameter than the former valve springs. On some early engines, the spring seat area must be made larger before these new springs can be installed; the installation procedure for these engines is different; see page 7. These new valve springs can be installed without removal of the cylinder heads, except for the engines that need the valve spring seat to be made larger. Use this instruction along with the Service Manual and Parts Book for the correct installation procedure. 1 There are no identification marks or part numbers on the former or the new valve springs. The easiest way to tell the springs apart is to measure the outside diameter of the springs. The diameter of new spring (1) is 39.60 (1.56"0). The diameter of former spring (2) is 36.60 (1.44"0). The valve spring itself must be measured and not the valve spring retainer. Both the former and new retainers have the same outside diameter. A visual identification of the valve springs and components can be made if a careful inspection is made. Former valve spring (2) has a smaller outside diameter than former retainer (3), also retainer (3) fits down over the top of spring (2). New retainers (4) may have different thickness as shown but they do not fit down over the top of spring (1). This inspection will tell what type of spring is in the engine.***3208 Engine serial number 79V1 - 79V8713 Tools Needed For Valve Spring Installation
1 Use a grinder to remove section (A) from 8S2277 Adapter Assembly (1) to the dimensions shown. Remove adapter (2) from 7F4291 Compressor Assembly (3). Grind the head off rivet (4) and remove spacer (5). 2 Use a grinder to remove the corners and make a radius around the end of spacer (5) as shown. Install spacer (5) in compressor assembly (3) with 1D4533 Bolt (6) and 2D6235 Nut. Install adapter (1) with S1615 Bolt (7), 4F7957 Bolt (8) and two 2D6235 Nuts. Bolt (7) must be on the same side that had section (A) removed. Do not tighten bolts (7) and (8) enough to bend adapter (1). 3 Remove valve cover (9). Inspect the valve springs and retainers (10) to tell if it is necessary to install the new size valve springs; see the procedure on page 2. Remove rocker shaft (11) and fuel injector nozzles (12). The former fuel nozzle clamp assemblies must not be used