6.  Q. What would you disconnect if the eccentric crank, eccentric rod, or the arm at the bottom of the link should break?

A. Would remove the broken parts, disconnect the link lifter from the radius rod and block the link block in the center of the link; the combination lever would then move the valve twice the amount of its lap and lead, which would be sufficient to provide for lubricating the cylinder.

7.  Q. If the main crank pin was broken?

A. Take down eccentric rod, eccentric crank, main rod and all connecting rods, block cross-head, disconnect from end of radius rod, chain it to running board and block steam valve to cover ports.

8.  Q. Broken cross-head pin, main rod, strap or brasses?

A. Take down main rod, block cross-head, disconnect front end of radius rod and chain to running board and block the valve to cover ports.

9.  Q. With a broken combination lever, union link or cross-head arms, what would you do?

A. Would disconnect the forward end of the radius rod and secure it to the running board with a small chain, wire or rope, remove all broken parts, take off the combination lever, even if not broken, secure the valve in its central position, loosen cylinder head to provide for lubrication, leave up main rod and proceed on one side.  If valve was blocked to open rear port slightly, this would provide for lubrication and the cylinder head need not be loosened.

10.  Q. If the radius rod on Walschaert gear is disabled, what should be done?

A. If broken in front of the link block, take off the broken part by disconnecting from combination lever, take down eccentric rod, fasten valve to cover ports and proceed on one side.  If broken back of the link block, block the link block in the desired position and proceed with both sides.

11.  Q. What would you disconnect with a Walschaert gear if a valve yoke should break?

A. Disconnect the forward end of the radius rod, suspend it from running board, block the valve, provide for lubricating the piston and proceed.

12.  Q. How proceed with a broken reach rod?

A. Remove the reach rod, block links on lower side to hold them in running position for proper direction.  Unless radius rod lifters can be uncoupled, leave a little slack in the blocking.

13.  Q. How can you tell without opening the steam chest if the valve covers the port with Stephenson gear?  With Walschaert gear?

A. Place the rocker shaft vertical with Stephenson gear.  Place the combination lever vertical with reverse lever in mid gear so the link block is in the center of Walschaert link.

14.  Q. What is the Baker-Pilliod valve gear?

A. It is an outside gear with an eccentric crank, similar to the Walschaert gear, but without a reversing link.  The motion is reversed by means of a reversing yoke instead of a link; the cut-off is changed in the same manner.  It uses a combination lever connected with a union link to its cross-head arm.  In case of breakdown remove the broken parts the same as described for Walschaert gear, blocking the reversing yoke, if necessary, in the proper position.