Camshaft Bearings (3.0L); Connecting Rods Removal (3.0L) - Mazda B-Series 1997 Workshop Manual

DISASSEMBLY
CAMSHAFT
BEARING SET
T65L-6250-A
Camshaft bearings
1. Using a sharp chisel or punch and hammer, cut a hole in
the center of the rear bearing bore plug.
2. Remove the plug using the SST. The plug can also be
pried from the bore using a large punch. Use care to
prevent damage to the plug bore.
Note
SST Number: 49 0223 6308 Impact Slide Hammer
3. Remove the camshaft bearing with Camshaft Bearing Set
T65L-6250-A, or equivalent.
4. Select the proper size expanding collet and backup nut,
and assemble on the expanding mandrel. With the ex-
panding collet collapsed, install the collet assembly in the
camshaft bearing, and tighten the backup nut on the
expanding mandrel until the collet fits the camshaft bear-
ing.
5. Assemble the puller screw and extension, if necessary,
and install on the expanding mandrel. Wrap acloth around
the threads of the puller screw to protect the bearing or
journal. Tighten the puller nut against the thrust bearing
and the pulling plate to remove the camshaft bearing. Be
sure to hold the end of the puller screw to prevent it from
turning.
6. Repeat steps 4 and 5 for each bearing. To remove the
front bearing, install the puller from the rear of the block.
Connecting rod cap
Before removina the connectina rod caps, measure the
connecting rod side clearance. l ~ e f e r to page 62-44.)
5BUOB2-074
Connecting rods
1. Before removing the connecting rods, measure the con-
necting rod bearing oil clearance by using Plastigage.
(Refer to page B2-51.)
2. Remove the Plastigage from the journals and bearings.
3. Inspect the top of the cylinder bore(s) before removing the
piston assembly. If a ridge has formed at the top of the
cylinder, it must be removed before piston extraction.
Remove the ridge as follows:
(1) Turn the crankshaft until the piston to be removed is at
the bottom of the cylinder bore.
(2) Place a clean shop cloth over the piston to collect
cuttings.
(3) Remove the ridge using a suitable ridge reamer,
following the manufacturer's instructions. Never cut
into the piston ring travel more than 0.794mm
(0.032 in} when removing a ridge.
4. Rotate the crankshaft to place the piston at the top of its
travel in the bore.
Caution
Use extreme care to prevent scratching or nicking
the crankshaft journal.