I need to replace the oil pan. I was advised to check the oil pump chain. For the $18 cost I may as well replace it. Anything else I should look at in there or replace with the pan off? (It has 114k miles)

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1996 E300D
1996 E320 Wagon 4MATIC
2003 Jetta TDI- GLS, 5-spd
1997 Passat TDI
2002 F350 Crew cab 4x4 Powerstroke
Jacobsen HR 15' cut ZTR w/ 80 HP Perkins diesel
Hustler 6' front deck with 28HP Kubota diesel